Xfinity stream app stopped working on Xumo stream box

Hello,

I've had the Xumo stream box for a few weeks, and has worked pretty well so far.

For the last two days I have not been able to open the Xfinity stream app (to watch NOW tv , ie live TV).

It just opens a blank blue screen.  I was on chat last night for over an hour trying to fix it; restarted Xumo box, restarted modem, refreshed all apps on Xumo box, etc.

Occasionally, I get the error: TVAPP-00111 "Try again later." on the blue screen.  I have seem this issue in many of the forums. What is the solution?

All the other apps on Xumo are working fine (Netflix, Hulu, Peacock, etc.)

Can you please help me get this fixed?