Did I get a free CE copy?

ok I know there are amillion posts about ordering the game off SE website. And a few people are asking the same question as me and have yet to get answers so that is why im making this post.

Ordered 2 copys of CE got my 2 codes off my purchase account> logged in and put my code in and got the "here is your code you cannot redeem this right now we will email you when it is time" Both worked perfect no errors stating they ahve been used already.

Now I got an email stating there was issues and some codes were claiming used already (I never got that error) so they gave me 2 more purchase account codes... Now here is the question.. are these codes linked to the one I got befor? if i use them will they over write the other codes I put in? or are they brand new codes that are pretty much "free" to anyone who gets them, since my other codes seemed to work right.?

any info would be great thank you!

These are just pre-order codes and not full game registration codes. Some users were having issues with their pre-order bonus code producing an error stating it had already been used. Therefore the Store team added unused codes to the accounts that were affected by this (even if the user hadn't encountered the issue yet). Therefore the codes you used before worked fine (yay) and you're all set. Since you already redeemed yours, you don't need to do anything with the replacement codes and just need to hang tight!