Help & troubleshooting for channels on your Roku device, including adding/removing channels, logging in to, authenticating, or activating a channel, channel-specific playback issues, assistance contacting channel publishers to report issues, and adjusting channel-specific settings.
Don't forget that Xfinity themselves call their channel a BETA. Many people for some time have reported problems with it. If your problem is just with that channel, and everything else works fine, then the problem is with the Xfinity channel, and Xfinity is the only ones who can help.
Roku doesn't create or support any of the available channels other than Roku Media Player and The Roku Channel.
Dan Roku Stick (3600), Ultra (4640), Ultra (4670), Premiere (3920), Insignia 720p Roku TV, Sharp 4K Roku TV, Nvidia Shield, Windows 10 Pro x64 running Serviio and Plex on a wired Gigabit network.