I have usually just IOS devices but bought now an android tablet (galaxy tab a7) which should just be used with my pianos.
Usually using BT-MIDI with the FP-30 is very "easy" you connect first to Roland Partner 2 app and after that you can use any app you want e.g. flowkey with BT-Midi (which is working fine with my Ipads/Iphones).
With Android this is not working. I can connect with BT and the Roland Partner 2 app but i can just use it with the roland app and with nothing else. Just hardwired connection is working (USB-C connection).

Is this just working with IOS? I couldn't find anything about that in the manuals or in the forums.