Access not Authorized You signed in successfully, but you must be an Xfinity user to enjoy this serv

Losing my mind with the lack of service response from Comacst. Yesterday, self-installed television service without issue.  Downloaded app to set up Wifi router.  Logged in with username/password only to receive this error message:  "Access not Authorized. You signed in successfully, but you must be an Xfinity user to enjoy this service." I can not get past this screen, my account page has stated 'we are setting up your account' for 24 hours and I can not get a human being to respond to me.  Messenger, Twitter, and certainly not on the telephone.  I am a paying customer that can not use their service.  Please help!