Many times users will get an error that they have not signed the term and conditions agreement when trying to ship through OrderCup.
Here is a link to help you with that error.....
The page in Seller Central where Sellers need to accept the carrier T&C for API use can be found here: https://sellercentral.amazon.com/gp/shipping-manager/terms-and-conditions.html
This page can also be accessed via the Buy Shipping preferences page in Seller Central
