I am so frustrated as I am having the same problem. Pre-ordered, activated pre-order code on website, picked platform (PC), it gave me 20 digit code to register on Mogstation, when I go to register expansion code.........INVALID! I sit in support chat ALL DAY... every time it gets time for a customer support representative to get to me, it magically tells me that chat support was cancelled (after two hours of waiting). Sort of as if, the dude read my ticket and knew there was nothing he could do and just closed it out and moved on without saying a word to me. This happened THREE times... So now I'm waiting for an email response which will probably result in nothing over the weekend. I am seriously thinking about buying it a second time for another code that works and demanding a refund on the first, or either just demanding a refund all-together and finding something more productive to do with my free time.