Roku TCL error code (Error:TVAPP-00101)

After addint Xfinity Beta App in the ROKU channels and attempting to connect to Xfinity. I got that message.  Now I am not connecting through my home network. I am away at college and Mac address is different. Any way to resovle this or does it mean I can only watch xfinity on my home network.

Please help resolve - I need my cable service.

thank you