After having this problem for more than one year (from 2014 to Sep 2015), I finally found a solution that works for me (which has also been posted on this page).
I've created another USPS.com account, using another email. And entered the correct billing address as your address (i.e., don't use your Business/working address to create the account). And for those who realized this problem and changed their addresses -- it simply does not work no matter how you changed your address after you've entered the wrong address when creating the account. In my new USPS account, I use the correct billing address, I use another credit card that hasn't been used in my previous account (not sure whether this matters or not). Then the payment works when I'm using the new account. BTW, don't forget to clean all your cookies related to *usps.com before creating the new account.
Dear all,
After having this problem for more than one year (from 2014 to Sep 2015), I finally found a solution that works for me (which has also been posted on this page).
I've created another USPS.com account, using another email. And entered the correct billing address as your address (i.e., don't use your Business/working address to create the account). And for those who realized this problem and changed their addresses -- it simply does not work no matter how you changed your address after you've entered the wrong address when creating the account. In my new USPS account, I use the correct billing address, I use another credit card that hasn't been used in my previous account (not sure whether this matters or not). Then the payment works when I'm using the new account. BTW, don't forget to clean all your cookies related to *usps.com before creating the new account.
Wish you all good luck!!