Invalid Zip/Address Error
When you get an "Invalid Address" error make sure your address is correct first using the Zip code lookup tool https://tools.usps.com/go/ZipLookupAction_input.
When you get this error message, it usually means that the billing address does not match the same one used on the credit card. To fix this you must change the card on file address by going into the Customer module and searching up the customer. After this you can release the order.