A week ago something happened where the various virtual slingbox remotes for the Comcast xfinity X1 system (arris box) won't power the cable box on/off. All other remote functions work. Obviously slingbox is unusable remotely if it cannot power the source. Have tried all trouble shooting steps. Anyone else any issues? Customer Support is unwilling to help. Issue occurs both through ios10 on iPhone 7, and desktop player through windows PC.