I just ended up swapping my code with someone for an NA code. I know folks are looking for EU codes so it should be easy to find someone to hook you guys up. Because what the FAQ SHOULD have said is if you account is from a certain region, to pick that region. NA code worked for me and I didn't need to make an EU PSN account.
Unfortunately neither the Europe or America codes work for me as stated in the OP. Creating a new account was the only way. =/
Is your account region US or Korean?