Can't Upgrade to Paind Account

Summary:

The system doesn't finish the account upgrade process

Content (required):

When I enter payment information to upgrade to a paid account, the system loops and doesn't go forward.

Note that the credit card billing and chargeback information arrives, but the system simply does not complete the account update.

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):