I bought an Apple Watch 1 on eBay in early December and it arrived today; It's linked to an AppleID

The only name it gave me when I tried to pair it when it asked for the AppleID was "j●●●●●@gmail.com". I assume it's a generic Apple-made AppleID and has a generic password. In the eBay description, it said "This item may be a floor model or store return that has been used."

Since I didn't really get a receipt, I can take a pic of the order from eBay if I need to.

It's a nice watch and I paid $49 for it ($40 plus Tax and shipping).

Any help would be appreciated. If not then I'll try to call the Apple Support line on the 2nd, as today's a holiday.

Thanks and Qapla (Klingon for 'Success!')