Thank you for reaching out to us today. We'll be happy to assist.
First, you'll need to reach oiut to your financial institution and change the address of your card with them, as our online payment system will not be able to process if there's a mismatch. After that, you should be able to change your address through myAT&T. Please let us know if this works for you.
Darais, AT&T Community Specialist
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