The App DOESN'T WORK on one of the biggest sports days of the year!!!

I was trying to watch football.   The app worked for the first 10 minutes and then has not been able to work on any of my devices since.  WTF!!!! It is like one of the biggest sports days of the year and your app craps the bed.  I logged out and now it won't even let me log back in.  This app has just gotten worse and worse over the last couple of years.  Time to get rid of Xfinity all together I guess.  Youtube TV... here I come