Been having this problem for a while now... I pre-ordered Heavensward from my local Gamestop, got the 6-3-6-3 code, and entered it into the instructed site. However, when I go to enter my early access 20-digit code, it keeps saying that it is invalid and doesn't let me proceed, even though I made no mistakes. What's worse, the Mog Station doesn't even realize that I HAVE entered a code, as I don't even have the line of text in my account info that says when I do. What gives? Did I do something wrong?

Extra Info:
- I'm on PC
- I downloaded ARR through Steam
- I've used my back-up code and got another 20-digit code. That one doesn't work either.