For NA players that got EU codes...

Deolus

From twitter just now:

 

FINAL FANTASY XIV: @FF_XIV_EN

‏NA users that got an incorrect region early access codes when using a preorder code from the US SE online store: please try your code again!

 

We've fixed the codes so that those experiencing errors will be able to redeem them again. NA pre-order website:

http://preorder.na.finalfantasyxiv.com/

 

[edit] put the full link instead of the shortened link in case you had doubts about it