Your account is delinquent. Please update your billing

#1

I currently have an invoice pending. Corresponding to the month of August of last year. It is for an amount of $ 29. The invoice number is in_1CwWs0DDmNEjA07UBTSMtwF0.

I want to be able to pay for it, and re-hire the Starter package:
"ADD-ONS $ 29 / mo Ionic Package Android & iOS builds Ionic Deploy with 10,000 monthly live updates “, when trying to acquire the Starter package I get a message that says:” Your account is delinquent. Please update your billing "

But I can not find the option to pay the bill that I have pending. And it does not let me acquire the package I want for the same reason.
What I can do?