Same thing happened to me with the “lean into the holidays” thing. Tried to get some apparel, checked out and paid, next day “your order has been canceled” with no explanation.
Sent an email through the site (which seems to have been routed to the nearest dealer). They said they’d look into it, waited a week, asked for follow up… “you need to talk to BMW, it’s their promotion”. Advertising email deleted, not messing with it again. Mind boggling that a company the size of BMW can’t get that kind of crap right. Literally shooting yourselves in the foot for no reason, as I wouldn’t have even poked around at the merch if they hadn’t sent the email.