We're testing our site and it hangs up on both USPS & FedEx Ground estimates.
We have accounts w/ both carriers.

http://www.musecards.com/store/

What are we doing wrong?


Here's the USPS error:

<Error>
<Number>80040b1a</Number>
<Description>Authorization failure. You are not authorized to connect to this server.</Description>
<Source>UspsCom:oAuth</Source>
</Error>