Emu Classic Bluetooth

Hello, I have a small problem. I have had an Emu Classic installed for a while now. I woke up my Skyline again and suddenly the Bluetooth interface no longer works. I have already tried a new Bluetooth module but to no avail. I have tried the whole thing with my cell phone and also with the Android radio. What could it be?

I have the same issue with my emu classic.

The first time it worked after that it stopped.

I tried reinstalling the App, but no success.

Any ideas?