I am trying to publish my app

[cbladeOfficial]

Target API level 31

Not really a "simple" solution: Build the APK. Decompile it. Edit the Manifest and add android:exported="true" to each <activity ... > and <receiver ... >. Set targetSdkVersion = 31. Recompile it. Check if the app (APK) can be installed on your test devices. If so, convert the APK to AAB: Convert APK TO AAB File - Guides - Niotron Community (otherwise check if you missed to add android:exported="true" to every <activity> and <receiver> and continue with step 4).

Here is a "solution" I found.