I got two early access codes? (One for NA and one for EU)

*Note: I am based in NA. NOT EU!

Yesterday, I entered in my preorder code to the http://preorder.eu.finalfantasyxiv.com/ website.

I bought the DC edition through greenmangaming.com, and received an EU preorder code, even though I am in the NA. I kept getting error 3's when I input the code to the preorder.na website, but when I changed it to preorder.eu, it worked and I redeemed my early access code.

The early access code I got was the NA version, so everything is fine. I entered that into my account, and I am now eligible for early access! However, this morning, I got sent ANOTHER early access code which is an EU code! I'm not exactly sure what happened here? Is this code linked to my NA code or something? Or was it a free code that SE sent me?

Probably a mistake on their end. It's happening to other people.