Welcome BKP!
I take it they have one in stock?
I just bought a 23 SX. Sounds like the same situation. Put my name on a list. When the dealer gets notification of allocation of the vehicle, they called me. I come down and do the paperwork. About 3 weeks later, the vehicle arrives and I come in and pick it up.
Had zero luck buying what was on the lot. Went to 6 dealerships, some multiple times. There was never an SX on the lot. Even if I did catch a non-SX Seltos, the dealer wanted $5k over sticker. Nope. Thanks, but no thanks. lol Took me about 4 months from when I first started seriously looking to purchase.
I guess since I'm on the subject, I paid $29,621 + $254 in dealer fees + $1,520 in sales tax/plate/title.