The best advice I can give you is to contact the retailer you pre-ordered with. Sorry there's not a simpler answer available.
I hope this helps!
Edit: If you could, please share the answer you get from the retailer. I'm sure this would help others with the same issue!
English
-
Ok so I called the retailer and he said that I would be given my pre-order codes when I complete the transaction, i.e. when I pick up the game and pay for it.