I have spent over 45 minutes trying to figure out how to ship a USPS medium flat rate package to a customer who has an FPO address and is on the USS Emory S Land. I verified that I have the correct address for them, made sure the customs info is filled out correctly, and made sure all other information is correct. Shopify first tells me that the address cannot be verified. I bypass that and purchase the shipping label anyway, then get a red error box saying "No shipping rates could be found for the destination address." I have shipped to this customer before at the exact same address when I was using a different e-commerce platform. Can someone please tell me what's wrong here?