Problems setting up API

I am setting up the FedEx API in market press and for some reason It keeps cutting off the last digit of the postal code, which gives me an error message "No valid shipping options found. Please check your address carefully".

I called FedEx directly and they said they can see the order trying to process shipping prices, but its cutting off the last digit of the ship to address.

The store hasn't been styled, but you can visit the dev site and check it out. dev.rahfish.com/store

any ideas how to fix this? thx Tim