Could just be a production error honestly. Ive shopped with GOAT a few times already and I find their service to be 5 star. You could try to get ahold of GOAT customer support probably but I do believe they are legit.
Sock Liner is off in one of the photos, personally I'm no yeezy expert so I cant find anything wrong with the pull tab but in my eyes the fake receipt is a dead giveaway.