New modem now I can't stream Xfinity beta - XFinity

I just bought a new modem, Netgear c7000v2 which was on the list of approved modems on I set it up and my TV in the living room works fine but all of the other TV's won't stream the Xfinity beta app. I went on my account and my old modem is still my only router under equipment. How do I remove my old router and add my new one? I think this will solve the problem. FYI there error message states "this device can only access Xfinity stream on your in-home Xfinity Wi-Fi. Use the app on your smartphone tablet or laptop to watch on the go anytime you like." (Error createDrmSession. TVAPP-00101)

This question, "New modem now I can't stream Xfinity beta," is about XFinity-Comcast TV Television Apps.

For other news regarding New modem now I can't stream Xfinity beta, and XFinity - Comcast Television Apps, see our recommended stories below.