Yamaha not playing spotify

[GGasparik]

I am using a Yamaha RX-A880 receiver and listening Spotify on it by using wifi or Lan. In the past it was working but in the last couple of weeks/months not.

I have the letest firmwhere on the receiver and also the latest apps, removed and reinstalled ect... I can connect to the receiver and it also shows that the song I am listening is playing but there is no sound at all. What can be the problem? I have restarted/reinstalled .. tried everything even with an other device but no success. If I try the same with bluetooth it works. Or if I try Tidal it works. only Spotify not.

Please help me.