This is ridiculous

Posted here last week about the WiFi Extenders, cancelled my Verizon and scheduled an installation this morning from 8-10am. I have received zero word from an installer. I go to log in on the app and I get the message

“Access not Authorized: You signed in successfully, but you must be an Xfinity user to enjoy this service.”

I log in on the website, receive an email to verify my account. Proceed to log in, and I can’t view any tabs without an error popping up. Billing, plan, payment, anything. I can’t even view my account details. I start a chat with support that was absolutely useless because the lady couldn’t find anything about my account, even though I was messaging her while logged in apparently. Posting here as a last resort, because this is off to a terrible start and I have no idea what to do. I took a day off for this. Should I just restart the process?