Sounds like a thrill bidder.
Are you getting paid?
If so, ship.
If not, open an Unpaid Item Dispute as soon as possible. Two or more UID Strikes will basically put the source bidder out of business, since most sellers have set up an automatic Block against deadbeats with Strikes through Seller Preferences /Buyer Requirements.
And of course, Block any of the names you spot.
Now.
Two things you should know.
There are companies which order for their customers (mostly in Japan) and do freight forwarding for them.
American sellers often panic about these and a very few* of the customers are sketchey, so the forwarders, a respectable business, often have bad google reviews.
The forwarder has hundreds if not thousands of customers, but they all have the same US address, usually in a coastal city with an airport. Check Google Maps. Are they in Delaware, Florida, or Oregon?
OTOH- Because digital items cannot be proven to have been sent or recieved, they are not covered by the Money Back Guarantee nor by Seller Protection.
On the third hand- Are you selling these with Immediate Payment Required? That will discourage nitwits who are just messing around.
On the fourth hand- Digital items don't need a freight forwarder, so it would be unusual for an overseas customer to use one.
*Because: people.
