Am I being scammed?

In short, I ordered a package off of shop. It took a few days for any tracking to appear, and out of no where I received an email from USPS saying my package was delivered to a PO Box in New York instead of my address. I directly contacted the seller and they said that I should disregard the email and sent me an image of the package. The package seemed the correct size and it had a shipping label with my name and address printed on top of it. But the tracking number is the same as the one that’s marked as delivered to a PO Box in New York. I tried contacting USPS via phone but I basically got put in a loop with the automated bot. No matter what i said, it would not put me in contact with an agent.