Can't use Xfinity Stream while at home using my hotspot

I am currently in an area where there's a major power outage due to recent storms.  I have power using my generator, but internet (Comcast) is down.  I connect my AppleTV to hotspot (AT&T) and try to use the Xfinity Stream app to watch the local news.  Nope can't do it.  Xfinity doesn't allow a user to watch local channels using a hotspot, while at home!  Comcast you need to open up and allow a valid subscribed user the option to use/stream the Xfinity app while connected to a user's phone hotspot!   The "On the Go" channels are not enough!  It may be time to switch to a streaming service that does allow the user to watch their entire channel lineup, regardless of what service they're using!