USPS?
No. Your seller was supposed to ship the item (usually by USPS, but certainly tracked) to Erlanger KY and the GSP plant.
"Weeks" is not a useful measure of time.
What date did you pay?
What date did the seller ship?
I'd allow 20 days* for delivery from the seller to GPS to you. That's been my experience in over 30 years in mail order.
It's not necessarily fast.
Did your item go to Erlanger?
If not your seller goofed.
Open an Item Not Received Dispute and get a refund.
*Of course, most shippers , both postal and courier, are slower over the holidays. Post offices are closed over the weekends and for another two statutory holidays as well, so there go six of the 20 days.