PI3 bluetooth audio receiver

I’m trying to get PI3 to work as a bluetooth audio receiver.
I can easily pair my phone with osmc but the problem starts when I want to play a song. I can play a song 1 out of 10 times. Most of time, nothing happens, but from time to time, after a few seconds of disruptions, the music magincally starts playing. Unfortunatly, it fails after a few minutes.
PI3 is connected via eth, wlan is disabled.
OSMC version 08.2023.

I will add that I’m using “hifiberry digi” card that works very well when streaming songs directly from kodi.

Does anyone have the same problem? Any clue? Thanks!