Roku devices

I am sitting in my bedroom watching the NFL playoffs on my Roku TV using the CBS Sports app. My issue is that I have xfinity ultra high speed internet and cable, yet the xfinity app is not working….says “we are having trouble streaming at this time@“…..I have 2 tv’s in my house that use Roku devices and a cable box, and both device apps aren’t working. I’ve done every troubleshooting step known to mankind including removing and downloading the app again. No luck…. How can supported apps such as fox sports and cbs sports work and the group that’s milking my bank account can’t fix theirs!!! I am paying way too much to have this stuff not working. I’m paying extra for higher speed internet order for this items to work!!!