No Camera Stream on Cavas

Yesterda i was happy to read that the new Firmware for P3P take it possible to use a camera to monitor the print. On my P3P is now a Camera connected via usb, in the menu the cam ist mark as connected and the preview is shown. But if I go on Canvas to Setup-> Camera Canvas says “Streaming is Disabled”.

Is there anything else i can do, to make it work?

Mike