Order paid, no confirmation email, locked out of app/website/Assistant with "not an Xfinity user" error - over 24 hours

I signed up for Xfinity WiFi August 31 2026 and confirmed payment on this order from the website which I downloaded as a pdf. I never received the promised confirmation or tracking email that was supposed to arrive within 2 hours.

Since then I cannot access my account through any channel:
The Xfinity app says "Access not Authorized. You signed in successfully, but you must be an Xfinity user to enjoy this service" even though sign in succeeds.
The website logs me in but the account page never loads any content.
Xfinity Assistant asks me to sign in, the sign in button does nothing, and it loops back to asking me to sign in again.
I cannot reach a human agent through chat because that also requires the same broken sign in.

I am currently outside the US and cannot call Xfinity support. I need someone to check whether my account and Xfinity ID have been fully provisioned, confirm my email address on file, and resend the confirmation and tracking email. Please reach out here or advise on the fastest way to reach a specialist given I have no working sign in method and no phone access.