Xfinity Stream tell's me to connect to Home WiFi network. I am home! Stuck in endless sign in loop on Apple TV box.

for the last six months I have used the latest, Apple TV 4K, to open the Xfinity Stream app and access My live channels and recorded shows. For some reason, it tells me now I need to connect to my home Wi-Fi network. I have verified I am on the home Wi-Fi network, and have no issue accessing all my other apps like Netflix, or Hulu. I have gone through basic, troubleshooting, such as, forgetting the Wi-Fi network, and re-joining, and even deleting the Xfinity Stream app from the AppleTV box multiple times to no avail. 

here is the loop I am stuck in -> Xfinity sign on screen -> enter activation code, or use QR code -> the screen refreshes and takes me to the black “welcome “screen, but says that I need to be on my home Wi-Fi network -> clicking OK takes me right back to the main XFINITY sign on screen.

using the QR code to activate from my mobile, phone does not work. And entering the activation code on my mobile, phone does not work either.