playbutton does not play music


i’ve installed volumio on my rpi with a hifiberry amp.

When i go to mediaserver, select an album and click on the big > in the upper right corner the whole album is copies to the queue and the music starts to play. So the configuration is fine,

But when i select another album, and click on the three dots on the right side and click play, the current song stops, which is fine, but the song isnt playing. I even cant add it to the queue. What am i doing wrong? None of the menu points of the three cdots is shoing any action, but i’m always getting the green conformation box.