Does anybody have a DDDac1794 from audiocreative?

I have a raspberry pi4 with fifopi reclocker. Its connected to my dddac1794 through the 3 coax cables.
In volumio i selected the 12s generic Dac.
Now when i play either radio or spotify, there’s no sound. (I can select volumio on my Phone and the fifopi has all the green Lights.
Maybe im doing something wrong in the other settings?
Does anybody have experience in with this set up?
Or this problem?