Local (ABC, NBC, CBS) channels gone from streaming app

yesterday the local network channels disappeared from the xfinity stream app. May be others gone, not sure. Not a device issue since same on two different smart TVs, a roku stick, mobike phone and ipad. Wasted 90 minutes on chat with xfinity tech support this AM since yesterdat they saud no agents were available. No change. They opened a ticket. Anyone else have this issue ?