Starting about two weeks ago, all calls to get freight quotes via GetEligibleShippingServices for Seller Fulfilled Prime Orders returned the following xml:
<Message>The request was blocked because it is forbidden.</Message>
Prior to this error, we were able to use our developer account to get freight quotes without issue for a seller who had authorized us to use their account. I can’t find anything about this cryptic error message on Google or elsewhere on the forums. Help?