Muse Luxe speaker buttons do not work


I am completely new to this topic.

I bought some Muse Luxe and I am quite satisfied.

I have flashed all with the latest firmware (fw: Muse.16.1223.master-v4.3, mode: Muse).

In Home Assistant I use the SlimProto (Squeezebox players) integration to play music with Music Assitant which works great.

Unfortunately I can’t adjust the volume using the buttons on the speakers, I can only pause the music with the play button but restarting the music doesn’t work either.

Do I need to set anything specific in the squeezelite-esp32 settings so that the commands are executed correctly?

I am very grateful for any help