Costco.com declined order if ship to address is a freight forwarder
I emailed their customer support and they said this:
In this case, our system canceled the order because the delivery address is a location that we cannot ship to. This includes:
Freight forwarders / mail drops
Service PO Boxes
APO (military boxes)
FPO (foreign boxes)
A few limited geographic areas in the U.S.
The ship to address is linking to a company called "ship 2 blaine" and they are acting as a freight agent to forward packages. We are not able to ship to these types of address. I do apologize for the inconvenience.