>>29949865Physical copies report a unique header to Nintendo's servers when you go online.
The dumped copy everyone was pirating had no header, so what Nintendo likely did was blanket-ban everyone using the unheadered version. Simple.
A legit physical copy a couple days early will probably not get you banned. Reviewers have been playing theirs for a week at this point already, so they can't just ban literally everyone currently playing the game.
