in the past we had the problem of adding a Firebaserealtimedatabase registrar.
https://www.b4x.com/android/forum/threads/google-firebase-manifestentries.106275/#content
The solution was to add a new ComponentDiscoveryService
This is a relatively new solution. Based on my tests on several devices it works properly.
@Multiverse app discovered the same issue. It was of no help for him to add another ComponenetDiscoveryService at the end of the manifest.
It still refused to work. When the app runs NOT the last ComponentDiscoveryService is used; due to this the DatabaseRegistrar was missing.
I then edited FirebaseAnalytics Firebase.b4x_excluded and added the Realtimeregistrar to it.
We then replaced the original jar with the changed one.
It now works in his app.
My WISH:
Please add FirebasDatabase and Firestore to the default-snippet too. The full snippet is attachet.