I Got An "AVS Mismatch" Error When I Tried To Pay.

If you received the following message after trying to pay:

There was a problem submitting your payment. Please correct the issue and try again. Authorize.net message was: The transaction has been declined because of an AVS mismatch. The address provided does not match billing address of cardholder.

Your credit card billing address did not match your One Stop App mailing address. 

To use a card with a different address from your One Stop App mailing address, click the "Specify my billing information" button just above the "Pay now" button on the checkout page.

To change your default One Stop App mailing address, click on your username at the top of any page where it says "Hello, [username]!".