Payment seems to be processed, but the available data is 0Kb

Good afternoon @aledawg,

Welcome to the Community Forums! I can totally understand your concern regarding the payment you recently made. I will be more than happy to help you with this! 

An excellent way to ensure your payment was submitted successfully is by accessing your myAT&T. Please follow these steps to review this information:

1. Log in to your account here
2. Your current rate plan balance will display on the main screen
3. Select the option Usage Summary to check your data balance
4. Select the Account History tab to view your payments

If your payment was processed, but you're still having issues receiving your data plan, please send us a private message to @ATTCares, so we can further address this concern. In the message, please include your full name, phone number and a convenient time to contact you. 

Thank you for reaching out to us! 

Best regards,

Anabel, AT&T Community Specialist 

Replying to my own question...: Turns out I had to call customer support 800-901-9878 and get a friendly CSR to reset my account.   It seems that if you run out of GB before your 30 days are up and then try to add more GB, then you have to get them to manually "reset" the account (and perhaps change your plan settings at the same time if you need to have more data)