diff --git a/changelog.d/8482.bugfix b/changelog.d/8482.bugfix
new file mode 100644
index 0000000000..3e4184b3bf
--- /dev/null
+++ b/changelog.d/8482.bugfix
@@ -0,0 +1 @@
+fix: Make some crypto calls suspendable to avoid reported ANR
diff --git a/matrix-sdk-android/src/kotlinCrypto/java/org/matrix/android/sdk/internal/crypto/DefaultCryptoService.kt b/matrix-sdk-android/src/kotlinCrypto/java/org/matrix/android/sdk/internal/crypto/DefaultCryptoService.kt
index f948063c77..b25c04aa9b 100755
--- a/matrix-sdk-android/src/kotlinCrypto/java/org/matrix/android/sdk/internal/crypto/DefaultCryptoService.kt
+++ b/matrix-sdk-android/src/kotlinCrypto/java/org/matrix/android/sdk/internal/crypto/DefaultCryptoService.kt
@@ -256,7 +256,7 @@ internal class DefaultCryptoService @Inject constructor(
         return if (longFormat) olmManager.getDetailedVersion(context) else olmManager.version
     }
 
-    override fun getMyCryptoDevice(): CryptoDeviceInfo {
+    override suspend fun getMyCryptoDevice(): CryptoDeviceInfo {
         return myDeviceInfoHolder.get().myDevice
     }
 
@@ -536,7 +536,7 @@ internal class DefaultCryptoService @Inject constructor(
 //                .executeBy(taskExecutor)
 //    }
 
-    override fun getCryptoDeviceInfo(userId: String): List<CryptoDeviceInfo> {
+    override suspend fun getCryptoDeviceInfo(userId: String): List<CryptoDeviceInfo> {
         return cryptoStore.getUserDeviceList(userId).orEmpty()
     }
 //
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/CryptoService.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/CryptoService.kt
index 043d0a29f5..31d11f6730 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/CryptoService.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/crypto/CryptoService.kt
@@ -73,7 +73,7 @@ interface CryptoService {
 
     suspend fun getUserDevices(userId: String): List<CryptoDeviceInfo>
 
-    fun getMyCryptoDevice(): CryptoDeviceInfo
+    suspend fun getMyCryptoDevice(): CryptoDeviceInfo
 
     fun getGlobalBlacklistUnverifiedDevices(): Boolean
 
@@ -130,7 +130,7 @@ interface CryptoService {
 
     suspend fun getCryptoDeviceInfo(userId: String, deviceId: String?): CryptoDeviceInfo?
 
-    fun getCryptoDeviceInfo(userId: String): List<CryptoDeviceInfo>
+    suspend fun getCryptoDeviceInfo(userId: String): List<CryptoDeviceInfo>
 
 //    fun getCryptoDeviceInfoFlow(userId: String): Flow<List<CryptoDeviceInfo>>
 
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/EventEditValidator.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/EventEditValidator.kt
index 150f06a18f..fbf1dc532c 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/EventEditValidator.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/EventEditValidator.kt
@@ -27,7 +27,6 @@ import org.matrix.android.sdk.api.session.events.model.toValidDecryptedEvent
 import org.matrix.android.sdk.api.session.room.model.message.MessageContent
 import org.matrix.android.sdk.api.session.room.model.message.MessagePollContent
 import org.matrix.android.sdk.internal.crypto.store.IMXCommonCryptoStore
-import timber.log.Timber
 import javax.inject.Inject
 
 internal class EventEditValidator @Inject constructor(val cryptoStore: IMXCommonCryptoStore) {
@@ -53,7 +52,6 @@ internal class EventEditValidator @Inject constructor(val cryptoStore: IMXCommon
      * If the original event was encrypted, the replacement should be too.
      */
     fun validateEdit(originalEvent: Event?, replaceEvent: Event): EditValidity {
-        Timber.v("###REPLACE valide event $originalEvent replaced $replaceEvent")
         // we might not know the original event at that time. In this case we can't perform the validation
         // Edits should be revalidated when the original event is received
         if (originalEvent == null) {
diff --git a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/read/DefaultReadService.kt b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/read/DefaultReadService.kt
index 36ec5e8dac..73b7ae05fe 100644
--- a/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/read/DefaultReadService.kt
+++ b/matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/session/room/read/DefaultReadService.kt
@@ -22,6 +22,8 @@ import com.zhuinden.monarchy.Monarchy
 import dagger.assisted.Assisted
 import dagger.assisted.AssistedFactory
 import dagger.assisted.AssistedInject
+import kotlinx.coroutines.withContext
+import org.matrix.android.sdk.api.MatrixCoroutineDispatchers
 import org.matrix.android.sdk.api.session.room.model.ReadReceipt
 import org.matrix.android.sdk.api.session.room.read.ReadService
 import org.matrix.android.sdk.api.util.Optional
@@ -43,7 +45,8 @@ internal class DefaultReadService @AssistedInject constructor(
         private val setReadMarkersTask: SetReadMarkersTask,
         private val readReceiptsSummaryMapper: ReadReceiptsSummaryMapper,
         @UserId private val userId: String,
-        private val homeServerCapabilitiesDataSource: HomeServerCapabilitiesDataSource
+        private val homeServerCapabilitiesDataSource: HomeServerCapabilitiesDataSource,
+        private val matrixCoroutineDispatchers: MatrixCoroutineDispatchers,
 ) : ReadService {
 
     @AssistedFactory
@@ -66,7 +69,7 @@ internal class DefaultReadService @AssistedInject constructor(
         setReadMarkersTask.execute(taskParams)
     }
 
-    override suspend fun setReadReceipt(eventId: String, threadId: String) {
+    override suspend fun setReadReceipt(eventId: String, threadId: String) = withContext(matrixCoroutineDispatchers.io) {
         val readReceiptThreadId = if (homeServerCapabilitiesDataSource.getHomeServerCapabilities()?.canUseThreadReadReceiptsAndNotifications == true) {
             threadId
         } else {
diff --git a/matrix-sdk-android/src/rustCrypto/java/org/matrix/android/sdk/internal/crypto/RustCryptoService.kt b/matrix-sdk-android/src/rustCrypto/java/org/matrix/android/sdk/internal/crypto/RustCryptoService.kt
index 1fa6c2c259..33fc13e728 100755
--- a/matrix-sdk-android/src/rustCrypto/java/org/matrix/android/sdk/internal/crypto/RustCryptoService.kt
+++ b/matrix-sdk-android/src/rustCrypto/java/org/matrix/android/sdk/internal/crypto/RustCryptoService.kt
@@ -25,7 +25,6 @@ import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.NonCancellable
 import kotlinx.coroutines.cancelChildren
 import kotlinx.coroutines.launch
-import kotlinx.coroutines.runBlocking
 import kotlinx.coroutines.withContext
 import org.matrix.android.sdk.api.MatrixConfiguration
 import org.matrix.android.sdk.api.MatrixCoroutineDispatchers
@@ -188,8 +187,8 @@ internal class RustCryptoService @Inject constructor(
         return if (longFormat) "Rust SDK $version, Vodozemac $vodozemac" else version
     }
 
-    override fun getMyCryptoDevice(): CryptoDeviceInfo {
-        return runBlocking { olmMachine.ownDevice() }
+    override suspend fun getMyCryptoDevice(): CryptoDeviceInfo = withContext(coroutineDispatchers.io) {
+        olmMachine.ownDevice()
     }
 
     override suspend fun fetchDevicesList(): List<DeviceInfo> {
@@ -341,11 +340,11 @@ internal class RustCryptoService @Inject constructor(
      */
     override suspend fun getCryptoDeviceInfo(userId: String, deviceId: String?): CryptoDeviceInfo? {
         if (userId.isEmpty() || deviceId.isNullOrEmpty()) return null
-        return olmMachine.getCryptoDeviceInfo(userId, deviceId)
+        return withContext(coroutineDispatchers.io) { olmMachine.getCryptoDeviceInfo(userId, deviceId) }
     }
 
-    override fun getCryptoDeviceInfo(userId: String): List<CryptoDeviceInfo> {
-        return runBlocking {
+    override suspend fun getCryptoDeviceInfo(userId: String): List<CryptoDeviceInfo> {
+        return withContext(coroutineDispatchers.io) {
             olmMachine.getCryptoDeviceInfo(userId)
         }
     }
diff --git a/vector-app/src/gplay/java/im/vector/app/gplay/features/settings/troubleshoot/TestTokenRegistration.kt b/vector-app/src/gplay/java/im/vector/app/gplay/features/settings/troubleshoot/TestTokenRegistration.kt
index cafc2d65e6..313073da4d 100644
--- a/vector-app/src/gplay/java/im/vector/app/gplay/features/settings/troubleshoot/TestTokenRegistration.kt
+++ b/vector-app/src/gplay/java/im/vector/app/gplay/features/settings/troubleshoot/TestTokenRegistration.kt
@@ -17,6 +17,7 @@ package im.vector.app.gplay.features.settings.troubleshoot
 
 import androidx.fragment.app.FragmentActivity
 import androidx.lifecycle.Observer
+import androidx.lifecycle.lifecycleScope
 import androidx.work.WorkInfo
 import androidx.work.WorkManager
 import im.vector.app.R
@@ -25,6 +26,8 @@ import im.vector.app.core.pushers.FcmHelper
 import im.vector.app.core.pushers.PushersManager
 import im.vector.app.core.resources.StringProvider
 import im.vector.app.features.settings.troubleshoot.TroubleshootTest
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.session.pushers.PusherState
 import javax.inject.Inject
 
@@ -60,16 +63,18 @@ class TestTokenRegistration @Inject constructor(
             )
             quickFix = object : TroubleshootQuickFix(R.string.settings_troubleshoot_test_token_registration_quick_fix) {
                 override fun doFix() {
-                    val workId = pushersManager.enqueueRegisterPusherWithFcmKey(fcmToken)
-                    WorkManager.getInstance(context).getWorkInfoByIdLiveData(workId).observe(context, Observer { workInfo ->
-                        if (workInfo != null) {
-                            if (workInfo.state == WorkInfo.State.SUCCEEDED) {
-                                manager?.retry(testParameters)
-                            } else if (workInfo.state == WorkInfo.State.FAILED) {
-                                manager?.retry(testParameters)
+                    context.lifecycleScope.launch(Dispatchers.IO) {
+                        val workId = pushersManager.enqueueRegisterPusherWithFcmKey(fcmToken)
+                        WorkManager.getInstance(context).getWorkInfoByIdLiveData(workId).observe(context, Observer { workInfo ->
+                            if (workInfo != null) {
+                                if (workInfo.state == WorkInfo.State.SUCCEEDED) {
+                                    manager?.retry(testParameters)
+                                } else if (workInfo.state == WorkInfo.State.FAILED) {
+                                    manager?.retry(testParameters)
+                                }
                             }
-                        }
-                    })
+                        })
+                    }
                 }
             }
 
diff --git a/vector-app/src/gplay/java/im/vector/app/push/fcm/GoogleFcmHelper.kt b/vector-app/src/gplay/java/im/vector/app/push/fcm/GoogleFcmHelper.kt
index 53e65f88b4..676cd0258f 100755
--- a/vector-app/src/gplay/java/im/vector/app/push/fcm/GoogleFcmHelper.kt
+++ b/vector-app/src/gplay/java/im/vector/app/push/fcm/GoogleFcmHelper.kt
@@ -26,8 +26,11 @@ import dagger.hilt.android.qualifiers.ApplicationContext
 import im.vector.app.R
 import im.vector.app.core.di.ActiveSessionHolder
 import im.vector.app.core.di.DefaultPreferences
+import im.vector.app.core.dispatchers.CoroutineDispatchers
 import im.vector.app.core.pushers.FcmHelper
 import im.vector.app.core.pushers.PushersManager
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.launch
 import timber.log.Timber
 import javax.inject.Inject
 
@@ -38,7 +41,12 @@ import javax.inject.Inject
 class GoogleFcmHelper @Inject constructor(
         @ApplicationContext private val context: Context,
         @DefaultPreferences private val sharedPrefs: SharedPreferences,
+        appScope: CoroutineScope,
+        private val coroutineDispatchers: CoroutineDispatchers
 ) : FcmHelper {
+
+    private val scope = CoroutineScope(appScope.coroutineContext + coroutineDispatchers.io)
+
     companion object {
         private const val PREFS_KEY_FCM_TOKEN = "FCM_TOKEN"
     }
@@ -64,7 +72,9 @@ class GoogleFcmHelper @Inject constructor(
                         .addOnSuccessListener { token ->
                             storeFcmToken(token)
                             if (registerPusher) {
-                                pushersManager.enqueueRegisterPusherWithFcmKey(token)
+                                scope.launch {
+                                    pushersManager.enqueueRegisterPusherWithFcmKey(token)
+                                }
                             }
                         }
                         .addOnFailureListener { e ->
diff --git a/vector-app/src/gplay/java/im/vector/app/push/fcm/VectorFirebaseMessagingService.kt b/vector-app/src/gplay/java/im/vector/app/push/fcm/VectorFirebaseMessagingService.kt
index 7fd55bd165..6ab9b90a84 100644
--- a/vector-app/src/gplay/java/im/vector/app/push/fcm/VectorFirebaseMessagingService.kt
+++ b/vector-app/src/gplay/java/im/vector/app/push/fcm/VectorFirebaseMessagingService.kt
@@ -27,6 +27,10 @@ import im.vector.app.core.pushers.PushersManager
 import im.vector.app.core.pushers.UnifiedPushHelper
 import im.vector.app.core.pushers.VectorPushHandler
 import im.vector.app.features.settings.VectorPreferences
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.SupervisorJob
+import kotlinx.coroutines.cancel
+import kotlinx.coroutines.launch
 import org.matrix.android.sdk.api.logger.LoggerTag
 import timber.log.Timber
 import javax.inject.Inject
@@ -43,6 +47,12 @@ class VectorFirebaseMessagingService : FirebaseMessagingService() {
     @Inject lateinit var vectorPushHandler: VectorPushHandler
     @Inject lateinit var unifiedPushHelper: UnifiedPushHelper
 
+    private val scope = CoroutineScope(SupervisorJob())
+
+    override fun onDestroy() {
+        scope.cancel()
+        super.onDestroy()
+    }
     override fun onNewToken(token: String) {
         Timber.tag(loggerTag.value).d("New Firebase token")
         fcmHelper.storeFcmToken(token)
@@ -51,7 +61,9 @@ class VectorFirebaseMessagingService : FirebaseMessagingService() {
                 activeSessionHolder.hasActiveSession() &&
                 unifiedPushHelper.isEmbeddedDistributor()
         ) {
-            pushersManager.enqueueRegisterPusher(token, getString(R.string.pusher_http_url))
+            scope.launch {
+                pushersManager.enqueueRegisterPusher(token, getString(R.string.pusher_http_url))
+            }
         }
     }
 
diff --git a/vector/src/main/java/im/vector/app/core/device/GetDeviceInfoUseCase.kt b/vector/src/main/java/im/vector/app/core/device/GetDeviceInfoUseCase.kt
index 4a66988b46..a97fa32a61 100644
--- a/vector/src/main/java/im/vector/app/core/device/GetDeviceInfoUseCase.kt
+++ b/vector/src/main/java/im/vector/app/core/device/GetDeviceInfoUseCase.kt
@@ -22,14 +22,14 @@ import javax.inject.Inject
 
 interface GetDeviceInfoUseCase {
 
-    fun execute(): CryptoDeviceInfo
+    suspend fun execute(): CryptoDeviceInfo
 }
 
 class DefaultGetDeviceInfoUseCase @Inject constructor(
         private val activeSessionHolder: ActiveSessionHolder
 ) : GetDeviceInfoUseCase {
 
-    override fun execute(): CryptoDeviceInfo {
+    override suspend fun execute(): CryptoDeviceInfo {
         return activeSessionHolder.getActiveSession().cryptoService().getMyCryptoDevice()
     }
 }
diff --git a/vector/src/main/java/im/vector/app/core/pushers/PushersManager.kt b/vector/src/main/java/im/vector/app/core/pushers/PushersManager.kt
index fb78feaef1..402471ecef 100644
--- a/vector/src/main/java/im/vector/app/core/pushers/PushersManager.kt
+++ b/vector/src/main/java/im/vector/app/core/pushers/PushersManager.kt
@@ -49,11 +49,11 @@ class PushersManager @Inject constructor(
         )
     }
 
-    fun enqueueRegisterPusherWithFcmKey(pushKey: String): UUID {
+    suspend fun enqueueRegisterPusherWithFcmKey(pushKey: String): UUID {
         return enqueueRegisterPusher(pushKey, stringProvider.getString(R.string.pusher_http_url))
     }
 
-    fun enqueueRegisterPusher(
+    suspend fun enqueueRegisterPusher(
             pushKey: String,
             gateway: String
     ): UUID {
@@ -62,7 +62,7 @@ class PushersManager @Inject constructor(
         return currentSession.pushersService().enqueueAddHttpPusher(pusher)
     }
 
-    private fun createHttpPusher(
+    private suspend fun createHttpPusher(
             pushKey: String,
             gateway: String
     ) = HttpPusher(
diff --git a/vector/src/main/java/im/vector/app/core/pushers/VectorUnifiedPushMessagingReceiver.kt b/vector/src/main/java/im/vector/app/core/pushers/VectorUnifiedPushMessagingReceiver.kt
index 838cbd5935..f0e5cd2c2c 100644
--- a/vector/src/main/java/im/vector/app/core/pushers/VectorUnifiedPushMessagingReceiver.kt
+++ b/vector/src/main/java/im/vector/app/core/pushers/VectorUnifiedPushMessagingReceiver.kt
@@ -76,7 +76,9 @@ class VectorUnifiedPushMessagingReceiver : MessagingReceiver() {
                 coroutineScope.launch {
                     unifiedPushHelper.storeCustomOrDefaultGateway(endpoint) {
                         unifiedPushHelper.getPushGateway()?.let {
-                            pushersManager.enqueueRegisterPusher(endpoint, it)
+                            coroutineScope.launch {
+                                pushersManager.enqueueRegisterPusher(endpoint, it)
+                            }
                         }
                     }
                 }
diff --git a/vector/src/main/java/im/vector/app/features/crypto/verification/self/SelfVerificationController.kt b/vector/src/main/java/im/vector/app/features/crypto/verification/self/SelfVerificationController.kt
index 4097cf957b..9871d21601 100644
--- a/vector/src/main/java/im/vector/app/features/crypto/verification/self/SelfVerificationController.kt
+++ b/vector/src/main/java/im/vector/app/features/crypto/verification/self/SelfVerificationController.kt
@@ -275,7 +275,7 @@ class SelfVerificationController @Inject constructor(
             id("notice_div")
         }
         // Option to verify with another device
-        if (state.hasAnyOtherSession) {
+        if (state.hasAnyOtherSession.invoke() == true) {
             bottomSheetVerificationActionItem {
                 id("start")
                 title(host.stringProvider.getString(R.string.verification_verify_with_another_device))
diff --git a/vector/src/main/java/im/vector/app/features/crypto/verification/self/SelfVerificationViewModel.kt b/vector/src/main/java/im/vector/app/features/crypto/verification/self/SelfVerificationViewModel.kt
index e92616f7df..55d84a2446 100644
--- a/vector/src/main/java/im/vector/app/features/crypto/verification/self/SelfVerificationViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/crypto/verification/self/SelfVerificationViewModel.kt
@@ -83,7 +83,7 @@ data class SelfVerificationViewState(
         val transactionId: String? = null,
         val currentDeviceCanCrossSign: Boolean = false,
         val userWantsToCancel: Boolean = false,
-        val hasAnyOtherSession: Boolean = false,
+        val hasAnyOtherSession: Async<Boolean> = Uninitialized,
         val quadSContainsSecrets: Boolean = false,
         val isVerificationRequired: Boolean = false,
         val isThisSessionVerified: Boolean = false,
@@ -146,21 +146,28 @@ class SelfVerificationViewModel @AssistedInject constructor(
             }
         }
 
-        val hasAnyOtherSession = session.cryptoService()
-                .getCryptoDeviceInfo(session.myUserId)
-                .any {
-                    it.deviceId != session.sessionParams.deviceId
-                }
+        setState { copy(hasAnyOtherSession = Loading()) }
+        viewModelScope.launch {
+            val hasAnyOtherSession = session.cryptoService()
+                    .getCryptoDeviceInfo(session.myUserId)
+                    .any {
+                        it.deviceId != session.sessionParams.deviceId
+                    }
+            setState {
+                copy(
+                        hasAnyOtherSession = Success(hasAnyOtherSession)
+                )
+            }
+        }
 
         setState {
             copy(
                     currentDeviceCanCrossSign = session.cryptoService().crossSigningService().canCrossSign(),
                     quadSContainsSecrets = session.sharedSecretStorageService().isRecoverySetup(),
-                    hasAnyOtherSession = hasAnyOtherSession
             )
         }
 
-        viewModelScope.launch {
+        viewModelScope.launch(Dispatchers.IO) {
             val isThisSessionVerified = session.cryptoService().crossSigningService().isCrossSigningVerified()
             setState {
                 copy(
diff --git a/vector/src/main/java/im/vector/app/features/home/UnknownDeviceDetectorSharedViewModel.kt b/vector/src/main/java/im/vector/app/features/home/UnknownDeviceDetectorSharedViewModel.kt
index 28016f109f..6ba5976eb8 100644
--- a/vector/src/main/java/im/vector/app/features/home/UnknownDeviceDetectorSharedViewModel.kt
+++ b/vector/src/main/java/im/vector/app/features/home/UnknownDeviceDetectorSharedViewModel.kt
@@ -92,11 +92,6 @@ class UnknownDeviceDetectorSharedViewModel @AssistedInject constructor(
     }
 
     init {
-        val currentSessionTs = session.cryptoService().getCryptoDeviceInfo(session.myUserId)
-                .firstOrNull { it.deviceId == session.sessionParams.deviceId }
-                ?.firstTimeSeenLocalTs
-                ?: clock.epochMillis()
-        Timber.v("## Detector - Current Session first time seen $currentSessionTs")
 
         combine(
                 session.flow().liveUserCryptoDevices(session.myUserId),
@@ -108,6 +103,12 @@ class UnknownDeviceDetectorSharedViewModel @AssistedInject constructor(
 
             deleteUnusedClientInformation(infoList)
 
+            val currentSessionTs = session.cryptoService().getCryptoDeviceInfo(session.myUserId)
+                    .firstOrNull { it.deviceId == session.sessionParams.deviceId }
+                    ?.firstTimeSeenLocalTs
+                    ?: clock.epochMillis()
+            Timber.v("## Detector - Current Session first time seen $currentSessionTs")
+
             infoList
                     .asSequence()
                     .filter {
diff --git a/vector/src/main/java/im/vector/app/features/settings/troubleshoot/TestEndpointAsTokenRegistration.kt b/vector/src/main/java/im/vector/app/features/settings/troubleshoot/TestEndpointAsTokenRegistration.kt
index b355b55903..6489fe537d 100644
--- a/vector/src/main/java/im/vector/app/features/settings/troubleshoot/TestEndpointAsTokenRegistration.kt
+++ b/vector/src/main/java/im/vector/app/features/settings/troubleshoot/TestEndpointAsTokenRegistration.kt
@@ -17,6 +17,7 @@
 package im.vector.app.features.settings.troubleshoot
 
 import androidx.fragment.app.FragmentActivity
+import androidx.lifecycle.lifecycleScope
 import androidx.work.WorkInfo
 import androidx.work.WorkManager
 import im.vector.app.R
@@ -72,13 +73,15 @@ class TestEndpointAsTokenRegistration @Inject constructor(
     }
 
     private fun unregisterThenRegister(testParameters: TestParameters, pushKey: String) {
-        activeSessionHolder.getSafeActiveSession()?.coroutineScope?.launch {
+        val scope = activeSessionHolder.getSafeActiveSession()?.coroutineScope ?: return
+        val io = activeSessionHolder.getActiveSession().coroutineDispatchers.io
+        scope.launch(io) {
             unregisterUnifiedPushUseCase.execute(pushersManager)
             registerUnifiedPush(distributor = "", testParameters, pushKey)
         }
     }
 
-    private fun registerUnifiedPush(
+    private suspend fun registerUnifiedPush(
             distributor: String,
             testParameters: TestParameters,
             pushKey: String,
@@ -106,7 +109,9 @@ class TestEndpointAsTokenRegistration @Inject constructor(
             pushKey: String,
     ) {
         unifiedPushHelper.showSelectDistributorDialog(context) { selection ->
-            registerUnifiedPush(distributor = selection, testParameters, pushKey)
+            context.lifecycleScope.launch {
+                registerUnifiedPush(distributor = selection, testParameters, pushKey)
+            }
         }
     }
 }
diff --git a/vector/src/test/java/im/vector/app/core/device/DefaultGetDeviceInfoUseCaseTest.kt b/vector/src/test/java/im/vector/app/core/device/DefaultGetDeviceInfoUseCaseTest.kt
index 0673fbadb5..01e5c88809 100644
--- a/vector/src/test/java/im/vector/app/core/device/DefaultGetDeviceInfoUseCaseTest.kt
+++ b/vector/src/test/java/im/vector/app/core/device/DefaultGetDeviceInfoUseCaseTest.kt
@@ -19,6 +19,7 @@ package im.vector.app.core.device
 import im.vector.app.test.fakes.FakeActiveSessionHolder
 import im.vector.app.test.fakes.FakeCryptoService
 import im.vector.app.test.fakes.FakeSession
+import kotlinx.coroutines.test.runTest
 import org.amshove.kluent.shouldBeEqualTo
 import org.junit.Test
 
@@ -31,7 +32,7 @@ class DefaultGetDeviceInfoUseCaseTest {
     private val getDeviceInfoUseCase = DefaultGetDeviceInfoUseCase(activeSessionHolder.instance)
 
     @Test
-    fun `when execute, then get crypto device info`() {
+    fun `when execute, then get crypto device info`() = runTest {
         val result = getDeviceInfoUseCase.execute()
 
         result shouldBeEqualTo cryptoService.cryptoDeviceInfo
diff --git a/vector/src/test/java/im/vector/app/core/pushers/PushersManagerTest.kt b/vector/src/test/java/im/vector/app/core/pushers/PushersManagerTest.kt
index 1e228353f5..4b6063fb93 100644
--- a/vector/src/test/java/im/vector/app/core/pushers/PushersManagerTest.kt
+++ b/vector/src/test/java/im/vector/app/core/pushers/PushersManagerTest.kt
@@ -29,6 +29,7 @@ import im.vector.app.test.fixtures.CryptoDeviceInfoFixture.aCryptoDeviceInfo
 import im.vector.app.test.fixtures.PusherFixture
 import im.vector.app.test.fixtures.SessionParamsFixture
 import io.mockk.mockk
+import kotlinx.coroutines.test.runTest
 import org.amshove.kluent.shouldBeEqualTo
 import org.junit.Test
 import org.matrix.android.sdk.api.session.crypto.model.UnsignedDeviceInfo
@@ -56,7 +57,7 @@ class PushersManagerTest {
     )
 
     @Test
-    fun `when enqueueRegisterPusher, then HttpPusher created and enqueued`() {
+    fun `when enqueueRegisterPusher, then HttpPusher created and enqueued`() = runTest {
         val pushKey = "abc"
         val gateway = "123"
         val pusherAppId = "app-id"
diff --git a/vector/src/test/java/im/vector/app/test/fakes/FakeCryptoService.kt b/vector/src/test/java/im/vector/app/test/fakes/FakeCryptoService.kt
index e8bb15ac58..b5e503dd98 100644
--- a/vector/src/test/java/im/vector/app/test/fakes/FakeCryptoService.kt
+++ b/vector/src/test/java/im/vector/app/test/fakes/FakeCryptoService.kt
@@ -84,5 +84,5 @@ class FakeCryptoService(
         }
     }
 
-    override fun getMyCryptoDevice() = cryptoDeviceInfo
+    override suspend fun getMyCryptoDevice() = cryptoDeviceInfo
 }
diff --git a/vector/src/test/java/im/vector/app/test/fakes/FakeGetDeviceInfoUseCase.kt b/vector/src/test/java/im/vector/app/test/fakes/FakeGetDeviceInfoUseCase.kt
index c284263d28..34853d1776 100644
--- a/vector/src/test/java/im/vector/app/test/fakes/FakeGetDeviceInfoUseCase.kt
+++ b/vector/src/test/java/im/vector/app/test/fakes/FakeGetDeviceInfoUseCase.kt
@@ -17,13 +17,13 @@
 package im.vector.app.test.fakes
 
 import im.vector.app.core.device.GetDeviceInfoUseCase
-import io.mockk.every
+import io.mockk.coEvery
 import io.mockk.mockk
 import org.matrix.android.sdk.api.session.crypto.model.CryptoDeviceInfo
 
 class FakeGetDeviceInfoUseCase : GetDeviceInfoUseCase by mockk() {
 
     fun givenDeviceInfo(cryptoDeviceInfo: CryptoDeviceInfo) {
-        every { execute() } returns cryptoDeviceInfo
+        coEvery { execute() } returns cryptoDeviceInfo
     }
 }