When I order I put down the Post Office Physical address plus my box number. Address is 203 N. Franklin St. #( your box #) Never have delivery problems using this address. UPS wil deliver to this address and Fed. Express.
Talk to the postmaster and be patient.
You will probably need to contact the shipper of the package. The USPS will simply return it as undeliverable since there is usually not a known connection between your physical address and your PO box #. You could try going to the Post Office and asking them if they have received the package yet and what you can do, if anything, to claim it.
Thanks! Your answer is awaiting moderation.