diff --git a/app/src/main/java/org/thoughtcrime/securesms/backup/v2/BackupRepository.kt b/app/src/main/java/org/thoughtcrime/securesms/backup/v2/BackupRepository.kt
index bd77ff0ba1..e289a2bd13 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/backup/v2/BackupRepository.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/backup/v2/BackupRepository.kt
@@ -142,7 +142,7 @@ object BackupRepository {
           Log.w(TAG, "Received status 403. The user is not in the media tier. Updating local state.", error.exception)
           SignalStore.backup.backupTier = MessageBackupTier.FREE
           SignalStore.uiHints.markHasEverEnabledRemoteBackups()
-          // TODO [backup] If the user thought they were in media tier but aren't, feels like we should have a special UX flow for this?
+          SignalStore.backup.backupExpiredAndDowngraded = true
         }
       }
     }
@@ -264,6 +264,18 @@ object BackupRepository {
     return SignalStore.backup.hasBackupBeenUploaded && SignalStore.backup.hasBackupFailure
   }
 
+  /**
+   * Displayed when the user falls out of the grace period for backups after their subscription
+   * expires.
+   */
+  fun shouldDisplayBackupExpiredAndDowngradedSheet(): Boolean {
+    if (shouldNotDisplayBackupFailedMessaging()) {
+      return false
+    }
+
+    return SignalStore.backup.backupExpiredAndDowngraded
+  }
+
   fun markBackupAlreadyRedeemedIndicatorClicked() {
     SignalStore.backup.hasBackupAlreadyRedeemedError = false
   }
@@ -283,6 +295,13 @@ object BackupRepository {
     SignalStore.backup.updateMessageBackupFailureSheetWatermark()
   }
 
+  /**
+   * User closed backup expiration alert sheet
+   */
+  fun markBackupExpiredAndDowngradedSheetDismissed() {
+    SignalStore.backup.backupExpiredAndDowngraded = false
+  }
+
   /**
    * Whether or not the "Backup failed" sheet should be displayed.
    * Should only be displayed if this is the failure of the initial backup creation.
diff --git a/app/src/main/java/org/thoughtcrime/securesms/backup/v2/ui/BackupAlertBottomSheet.kt b/app/src/main/java/org/thoughtcrime/securesms/backup/v2/ui/BackupAlertBottomSheet.kt
index 5d1d7833f4..d8dc25167f 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/backup/v2/ui/BackupAlertBottomSheet.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/backup/v2/ui/BackupAlertBottomSheet.kt
@@ -119,6 +119,9 @@ class BackupAlertBottomSheet : ComposeBottomSheetDialogFragment() {
         PlayStoreUtil.openPlayStoreOrOurApkDownloadPage(requireContext())
 
       BackupAlert.CouldNotRedeemBackup -> Unit
+      BackupAlert.ExpiredAndDowngraded -> {
+        startActivity(AppSettingsActivity.remoteBackups(requireContext()))
+      }
     }
 
     dismissAllowingStateLoss()
@@ -127,6 +130,7 @@ class BackupAlertBottomSheet : ComposeBottomSheetDialogFragment() {
   @Stable
   private fun performSecondaryAction() {
     when (backupAlert) {
+      BackupAlert.ExpiredAndDowngraded -> Unit
       is BackupAlert.CouldNotCompleteBackup -> Unit
       BackupAlert.FailedToRenew -> Unit
       is BackupAlert.MediaBackupsAreOff -> error("Use MediaBackupsAreOffBottomSheet instead.")
@@ -150,6 +154,7 @@ class BackupAlertBottomSheet : ComposeBottomSheetDialogFragment() {
     when (backupAlert) {
       is BackupAlert.CouldNotCompleteBackup, BackupAlert.BackupFailed -> BackupRepository.markBackupFailedSheetDismissed()
       is BackupAlert.MediaWillBeDeletedToday -> BackupRepository.snoozeYourMediaWillBeDeletedTodaySheet()
+      is BackupAlert.ExpiredAndDowngraded -> BackupRepository.markBackupExpiredAndDowngradedSheetDismissed()
       else -> Unit
     }
   }
@@ -205,7 +210,7 @@ fun BackupAlertSheetContent(
 
     when (backupAlert) {
       is BackupAlert.MediaBackupsAreOff -> error("Use MediaBackupsAreOffBottomSheet instead.")
-      BackupAlert.FailedToRenew -> {
+      BackupAlert.FailedToRenew, BackupAlert.ExpiredAndDowngraded -> {
         Box {
           Image(
             imageVector = ImageVector.vectorResource(id = R.drawable.image_signal_backups),
@@ -255,6 +260,7 @@ fun BackupAlertSheetContent(
       BackupAlert.BackupFailed -> BackupFailedBody()
       BackupAlert.CouldNotRedeemBackup -> CouldNotRedeemBackup()
       is BackupAlert.MediaBackupsAreOff -> error("Use MediaBackupsAreOffBottomSheet instead.")
+      BackupAlert.ExpiredAndDowngraded -> SubscriptionExpired()
     }
 
     val secondaryActionResource = rememberSecondaryActionResource(backupAlert = backupAlert)
@@ -331,6 +337,23 @@ private fun CouldNotRedeemBackup() {
   }
 }
 
+@Composable
+private fun SubscriptionExpired() {
+  Text(
+    text = stringResource(id = R.string.BackupAlertBottomSheet__your_subscription_couldnt_be_renewed),
+    textAlign = TextAlign.Center,
+    color = MaterialTheme.colorScheme.onSurfaceVariant,
+    modifier = Modifier.padding(bottom = 24.dp)
+  )
+
+  Text(
+    text = stringResource(id = R.string.BackupAlertBottomSheet__youll_continue_to_have_access_to_the_free),
+    textAlign = TextAlign.Center,
+    color = MaterialTheme.colorScheme.onSurfaceVariant,
+    modifier = Modifier.padding(bottom = 36.dp)
+  )
+}
+
 @Composable
 private fun CouldNotCompleteBackup(
   daysSinceLastBackup: Int
@@ -401,7 +424,7 @@ private fun BackupFailedBody() {
 private fun rememberBackupsIconColors(backupAlert: BackupAlert): BackupsIconColors {
   return remember(backupAlert) {
     when (backupAlert) {
-      BackupAlert.FailedToRenew, is BackupAlert.MediaBackupsAreOff -> error("Not icon-based options.")
+      BackupAlert.ExpiredAndDowngraded, BackupAlert.FailedToRenew, is BackupAlert.MediaBackupsAreOff -> error("Not icon-based options.")
       is BackupAlert.CouldNotCompleteBackup, BackupAlert.BackupFailed, is BackupAlert.DiskFull, BackupAlert.CouldNotRedeemBackup -> BackupsIconColors.Warning
       BackupAlert.MediaWillBeDeletedToday -> BackupsIconColors.Error
     }
@@ -418,6 +441,7 @@ private fun titleString(backupAlert: BackupAlert): String {
     is BackupAlert.DiskFull -> stringResource(R.string.BackupAlertBottomSheet__free_up_s_on_this_device, backupAlert.requiredSpace)
     BackupAlert.BackupFailed -> stringResource(R.string.BackupAlertBottomSheet__backup_failed)
     BackupAlert.CouldNotRedeemBackup -> stringResource(R.string.BackupAlertBottomSheet__couldnt_redeem_your_backups_subscription)
+    BackupAlert.ExpiredAndDowngraded -> stringResource(R.string.BackupAlertBottomSheet__your_backups_subscription_has_expired)
   }
 }
 
@@ -433,6 +457,7 @@ private fun primaryActionString(
     is BackupAlert.DiskFull -> stringResource(R.string.BackupAlertBottomSheet__got_it)
     is BackupAlert.BackupFailed -> stringResource(R.string.BackupAlertBottomSheet__check_for_update)
     BackupAlert.CouldNotRedeemBackup -> stringResource(R.string.BackupAlertBottomSheet__got_it)
+    BackupAlert.ExpiredAndDowngraded -> stringResource(R.string.BackupAlertBottomSheet__manage_backups)
   }
 }
 
@@ -441,7 +466,7 @@ private fun rememberSecondaryActionResource(backupAlert: BackupAlert): Int {
   return remember(backupAlert) {
     when (backupAlert) {
       is BackupAlert.CouldNotCompleteBackup -> R.string.BackupAlertBottomSheet__try_later
-      BackupAlert.FailedToRenew -> R.string.BackupAlertBottomSheet__not_now
+      BackupAlert.FailedToRenew, BackupAlert.ExpiredAndDowngraded -> R.string.BackupAlertBottomSheet__not_now
       is BackupAlert.MediaBackupsAreOff -> error("Not supported.")
       BackupAlert.MediaWillBeDeletedToday -> R.string.BackupAlertBottomSheet__dont_download_media
       is BackupAlert.DiskFull -> R.string.BackupAlertBottomSheet__skip_restore
@@ -511,6 +536,16 @@ private fun BackupAlertSheetContentPreviewCouldNotRedeemBackup() {
   }
 }
 
+@SignalPreview
+@Composable
+private fun BackupAlertSheetContentPreviewSubscriptionExpired() {
+  Previews.BottomSheetPreview {
+    BackupAlertSheetContent(
+      backupAlert = BackupAlert.ExpiredAndDowngraded
+    )
+  }
+}
+
 /**
  * All necessary information to display the sheet should be handed in through the specific alert.
  */
@@ -559,4 +594,10 @@ sealed class BackupAlert : Parcelable {
    * Too many attempts to redeem the backup subscription have occurred this month.
    */
   data object CouldNotRedeemBackup : BackupAlert()
+
+  /**
+   * Displayed after the user falls out of the grace period and their backups subscription is downgraded
+   * to the free tier.
+   */
+  data object ExpiredAndDowngraded : BackupAlert()
 }
diff --git a/app/src/main/java/org/thoughtcrime/securesms/backup/v2/ui/BackupAlertDelegate.kt b/app/src/main/java/org/thoughtcrime/securesms/backup/v2/ui/BackupAlertDelegate.kt
index b0b785140b..a596f7d86d 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/backup/v2/ui/BackupAlertDelegate.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/backup/v2/ui/BackupAlertDelegate.kt
@@ -29,6 +29,8 @@ object BackupAlertDelegate {
           BackupAlertBottomSheet.create(BackupAlert.CouldNotCompleteBackup(daysSinceLastBackup = SignalStore.backup.daysSinceLastBackup)).show(fragmentManager, null)
         } else if (withContext(Dispatchers.IO) { BackupRepository.shouldDisplayYourMediaWillBeDeletedTodaySheet() }) {
           BackupAlertBottomSheet.create(BackupAlert.MediaWillBeDeletedToday).show(fragmentManager, null)
+        } else if (BackupRepository.shouldDisplayBackupExpiredAndDowngradedSheet()) {
+          BackupAlertBottomSheet.create(BackupAlert.ExpiredAndDowngraded).show(fragmentManager, null)
         }
       }
     }
diff --git a/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/backups/remote/RemoteBackupsSettingsFragment.kt b/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/backups/remote/RemoteBackupsSettingsFragment.kt
index 73bb7d3059..e856b4fad5 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/backups/remote/RemoteBackupsSettingsFragment.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/backups/remote/RemoteBackupsSettingsFragment.kt
@@ -165,7 +165,7 @@ class RemoteBackupsSettingsFragment : ComposeFragment() {
   @Stable
   private inner class Callbacks : ContentCallbacks {
     override fun onNavigationClick() {
-      findNavController().popBackStack()
+      requireActivity().onBackPressedDispatcher.onBackPressed()
     }
 
     override fun onBackupTypeActionClick(tier: MessageBackupTier) {
@@ -433,6 +433,14 @@ private fun RemoteBackupsSettingsContent(
               onBackupTypeActionButtonClicked = contentCallbacks::onBackupTypeActionClick
             )
           }
+
+          RemoteBackupsSettingsState.BackupState.NotFound -> {
+            SubscriptionNotFoundCard(
+              title = stringResource(R.string.RemoteBackupsSettingsFragment__your_subscription_was_not_found),
+              onRenewClick = contentCallbacks::onRenewLostSubscription,
+              onLearnMoreClick = contentCallbacks::onLearnMoreAboutLostSubscription
+            )
+          }
         }
       }
 
@@ -849,7 +857,9 @@ private fun RedemptionErrorAlert(
 
     Text(
       text = stringResource(R.string.AppSettingsFragment__couldnt_redeem_your_backups_subscription),
-      modifier = Modifier.padding(start = 16.dp, end = 4.dp).weight(1f)
+      modifier = Modifier
+        .padding(start = 16.dp, end = 4.dp)
+        .weight(1f)
     )
 
     Buttons.Small(onClick = onDetailsClick) {
@@ -939,8 +949,8 @@ private fun PendingCard(
 }
 
 @Composable
-private fun SubscriptionMismatchMissingGooglePlayCard(
-  state: RemoteBackupsSettingsState.BackupState.SubscriptionMismatchMissingGooglePlay,
+private fun SubscriptionNotFoundCard(
+  title: String,
   onRenewClick: () -> Unit = {},
   onLearnMoreClick: () -> Unit = {}
 ) {
@@ -951,11 +961,9 @@ private fun SubscriptionMismatchMissingGooglePlayCard(
       .background(color = SignalTheme.colors.colorSurface2, shape = RoundedCornerShape(12.dp))
       .padding(24.dp)
   ) {
-    val days by rememberUpdatedState((state.renewalTime - System.currentTimeMillis().milliseconds).inWholeDays)
-
     Row {
       Text(
-        text = pluralStringResource(R.plurals.RemoteBackupsSettingsFragment__your_subscription_on_this_device_is_valid, days.toInt(), days),
+        text = title,
         modifier = Modifier
           .weight(1f)
           .padding(end = 13.dp)
@@ -1017,6 +1025,21 @@ private fun SubscriptionMismatchMissingGooglePlayCard(
   }
 }
 
+@Composable
+private fun SubscriptionMismatchMissingGooglePlayCard(
+  state: RemoteBackupsSettingsState.BackupState.SubscriptionMismatchMissingGooglePlay,
+  onRenewClick: () -> Unit = {},
+  onLearnMoreClick: () -> Unit = {}
+) {
+  val days by rememberUpdatedState((state.renewalTime - System.currentTimeMillis().milliseconds).inWholeDays)
+
+  SubscriptionNotFoundCard(
+    title = pluralStringResource(R.plurals.RemoteBackupsSettingsFragment__your_subscription_on_this_device_is_valid, days.toInt(), days),
+    onRenewClick = onRenewClick,
+    onLearnMoreClick = onLearnMoreClick
+  )
+}
+
 @Composable
 private fun InProgressBackupRow(
   archiveUploadProgressState: ArchiveUploadProgressState
@@ -1430,6 +1453,16 @@ private fun PendingCardPreview() {
   }
 }
 
+@SignalPreview
+@Composable
+private fun SubscriptionNotFoundCardPreview() {
+  Previews.Preview {
+    SubscriptionNotFoundCard(
+      title = stringResource(R.string.RemoteBackupsSettingsFragment__your_subscription_was_not_found)
+    )
+  }
+}
+
 @SignalPreview
 @Composable
 private fun SubscriptionMismatchMissingGooglePlayCardPreview() {
diff --git a/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/backups/remote/RemoteBackupsSettingsState.kt b/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/backups/remote/RemoteBackupsSettingsState.kt
index d93e4d17e9..fde3c8961a 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/backups/remote/RemoteBackupsSettingsState.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/backups/remote/RemoteBackupsSettingsState.kt
@@ -85,6 +85,11 @@ data class RemoteBackupsSettingsState(
       override val renewalTime: Duration = 0.seconds
     ) : WithTypeAndRenewalTime
 
+    /**
+     * User has an active backup but no active subscription
+     */
+    data object NotFound : BackupState
+
     /**
      * User has a canceled paid tier backup
      */
diff --git a/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/backups/remote/RemoteBackupsSettingsViewModel.kt b/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/backups/remote/RemoteBackupsSettingsViewModel.kt
index cfaf1ecaea..e0685e4a19 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/backups/remote/RemoteBackupsSettingsViewModel.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/backups/remote/RemoteBackupsSettingsViewModel.kt
@@ -345,11 +345,19 @@ class RemoteBackupsSettingsViewModel : ViewModel() {
               )
             }
           } else {
-            Log.d(TAG, "ActiveSubscription had null subscription object. Updating UI state with INACTIVE subscription.")
-            _state.update {
-              it.copy(
-                backupState = RemoteBackupsSettingsState.BackupState.Inactive(type)
-              )
+            Log.d(TAG, "ActiveSubscription had null subscription object.")
+            if (SignalStore.backup.areBackupsEnabled) {
+              _state.update {
+                it.copy(
+                  backupState = RemoteBackupsSettingsState.BackupState.NotFound
+                )
+              }
+            } else {
+              _state.update {
+                it.copy(
+                  backupState = RemoteBackupsSettingsState.BackupState.Inactive(type)
+                )
+              }
             }
           }
         } else {
diff --git a/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/internal/backup/InternalBackupPlaygroundFragment.kt b/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/internal/backup/InternalBackupPlaygroundFragment.kt
index 39ae5a0249..b5ebfc9a53 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/internal/backup/InternalBackupPlaygroundFragment.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/components/settings/app/internal/backup/InternalBackupPlaygroundFragment.kt
@@ -522,6 +522,22 @@ fun Screen(
 
       Dividers.Default()
 
+      Rows.TextRow(
+        text = "Mark backup failure",
+        label = "This will display the error sheet when returning to the chats list.",
+        onClick = {
+          SignalStore.backup.internalSetBackupFailedErrorState()
+        }
+      )
+
+      Rows.TextRow(
+        text = "Mark backup expired and downgraded",
+        label = "This will not actually downgrade the user.",
+        onClick = {
+          SignalStore.backup.backupExpiredAndDowngraded = true
+        }
+      )
+
       Spacer(modifier = Modifier.height(8.dp))
     }
   }
diff --git a/app/src/main/java/org/thoughtcrime/securesms/keyvalue/BackupValues.kt b/app/src/main/java/org/thoughtcrime/securesms/keyvalue/BackupValues.kt
index 938eb91351..5eec3d57cf 100644
--- a/app/src/main/java/org/thoughtcrime/securesms/keyvalue/BackupValues.kt
+++ b/app/src/main/java/org/thoughtcrime/securesms/keyvalue/BackupValues.kt
@@ -70,6 +70,7 @@ class BackupValues(store: KeyValueStore) : SignalStoreValues(store) {
     private const val KEY_INVALID_BACKUP_VERSION = "backup.invalid.version"
 
     private const val KEY_USER_MANUALLY_SKIPPED_MEDIA_RESTORE = "backup.user.manually.skipped.media.restore"
+    private const val KEY_BACKUP_EXPIRED_AND_DOWNGRADED = "backup.expired.and.downgraded"
 
     private const val KEY_MEDIA_ROOT_BACKUP_KEY = "backup.mediaRootBackupKey"
 
@@ -111,6 +112,8 @@ class BackupValues(store: KeyValueStore) : SignalStoreValues(store) {
 
   var userManuallySkippedMediaRestore: Boolean by booleanValue(KEY_USER_MANUALLY_SKIPPED_MEDIA_RESTORE, false)
 
+  var backupExpiredAndDowngraded: Boolean by booleanValue(KEY_BACKUP_EXPIRED_AND_DOWNGRADED, false)
+
   /**
    * The last time the device notified the server that the archive is still in use.
    */
@@ -242,6 +245,11 @@ class BackupValues(store: KeyValueStore) : SignalStoreValues(store) {
    */
   var spaceAvailableOnDiskBytes: Long by longValue(KEY_BACKUP_FAIL_SPACE_REMAINING, -1L)
 
+  fun internalSetBackupFailedErrorState() {
+    markMessageBackupFailure()
+    putLong(KEY_BACKUP_FAIL_SHEET_SNOOZE_TIME, 0)
+  }
+
   /**
    * Call when the user disables backups. Clears/resets all relevant fields.
    */
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index fdf16ab037..d823ed251d 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -7837,6 +7837,12 @@
     <string name="BackupAlertBottomSheet__your_backups_subscription_failed_to_renew">Your backups subscription failed to renew</string>
     <!-- Sheet body when user payment failed to process -->
     <string name="BackupAlertBottomSheet__check_to_make_sure_your_payment_method">Check to make sure your payment method is up to date. Tap Manage subscription and under Payment methods tap Update.</string>
+    <!-- Sheet title for when user falls out of grace period -->
+    <string name="BackupAlertBottomSheet__your_backups_subscription_has_expired">Your backups subscription has expired</string>
+    <!-- Sheet body part 1 for when user falls out of grace period -->
+    <string name="BackupAlertBottomSheet__your_subscription_couldnt_be_renewed">Your subscription couldn\'t be renewed with your payment method. To continue backing up media you need an active subscription.</string>
+    <!-- Sheet body part 2 for when user falls out of grace period -->
+    <string name="BackupAlertBottomSheet__youll_continue_to_have_access_to_the_free">You\'ll continue to have access to the free Signal Backups plan.</string>
     <!-- Sheet title for generic backup error -->
     <string name="BackupAlertBottomSheet__couldnt_complete_backup">Couldn\'t complete backup</string>
     <!-- Sheet body for generic backup error. Placeholder is days since last backup. -->
@@ -7848,6 +7854,8 @@
     <string name="BackupAlertBottomSheet__learn_more">Learn more</string>
     <!-- Secondary action button text when user does not have enough free space to download their backup. -->
     <string name="BackupAlertBottomSheet__skip_restore">Skip restore</string>
+    <!-- Primary action button to open backups management screen -->
+    <string name="BackupAlertBottomSheet__manage_backups">Manage backups</string>
     <!-- Primary action button to start backup immediately -->
     <string name="BackupAlertBottomSheet__back_up_now">Back up now</string>
     <!-- Primary action button when user doesn\'t have enough space -->
@@ -8140,6 +8148,8 @@
     <string name="RemoteBackupsSettingsFragment__downloading_your_backup">Downloading your backup</string>
     <!-- Dialog message for dialog which alerts user their optimized media will be downloaded -->
     <string name="RemoteBackupsSettingsFragment__depending_on_the_size">Depending on the size of your backup, this could take a long time. You can use your phone as you normally do while the download takes place.</string>
+    <!-- Displayed in card when user has backups enabled but there is otherwise no subscription available. This can happen for example after a device transfer. -->
+    <string name="RemoteBackupsSettingsFragment__your_subscription_was_not_found">Your subscription was not found on this device. Renew to continue using Signal Backups.</string>
     <!-- Displayed in card when user has a signal subscription but the device doesn\'t see a google play billing subscription. Placeholder is days until subscription expiration. -->
     <plurals name="RemoteBackupsSettingsFragment__your_subscription_on_this_device_is_valid">
         <item quantity="one">Your subscription on this device is valid for the next %1$d day. Renew to continue using Signal Backups</item>