Un-enrolled in autobill, can't seem to get payment to show up

Currently on a prepaid plan and has been going fine for years.  Yesterday was notified that my auto-bill had been unenrolled.  Figured it was a glitch but I logged in and re-enrolled my usual unexpired credit card.

Today I am seeing that the account still has zero balance and is due.  Manually paid for a month.  Got another message saying that account is suspended.  Manually paid again because this morning's payment didn't show up.  Still the same issue.

Is there some problem with payment processing?  I have a valid card and nothing changed.  It would be a huge hassle if I lose my old number because the payment system isn't updating.