Xfinity App doesn’t work at all

Xfinity App hasn’t worked since I got internet a week ago. It doesn’t work on my phone or tablet. I’ve deleted and reinstalled the app multiple times, cleared old data, and ensured I was downloading the up to date version. Absolutely nothing works and it’s incredibly frustrating. As soon as I log in I just get an almost blank screen saying, “Something went wrong. Please try again later.”