Contour TV App not working on my tablet

I am unable to watch TV on my android tablet. It was working fine this past few weeks, but today is not

connecting to any channels.

I left the app connecting for a while and then I get the following message:

Playback issue ::2111
We're sorry, but we're unable to play this video right now. Please try a different channel or program.

I tried different channels, but nothing seems to work.

(My phone and computer are OK).