Double check your UserIDs on your home system with the Lookup tool at https://idm.xfinity.com/myaccount/lookup. After you enter the requested information you'll see a list of the UserIDs on your account.
If the ID you are using is not listed you'll need to use one of the IDs shown. If you need help with that, or if your ID is listed but still not working properly, contact one of their reps at the phone number on your bill or 1-800-Comcast, or chat with them at https://support.xfinity.com/chat and have them fix the problem.
HuismeIDunno, welcome to the forums.
I would be happy to review the account with you to make sure everything is set up correctly. Please send me a PM with your first/last name.
To send me a Private Message, please click my name “ComcastAlly” and click “send a message.”