BOOOO!! It's not allowing me to change the first two letter.. I'm guess it must be that 500 ap thing(that everyone is talking about) where you have to buy ap in order to redeem for that 500ap. Anyway, Thank you so much!
Yea there are 3 types:
GR - Gift redemption (Ignite codes, etc) for events and stuff
CP - Coupon code (good for bonus ap on your purchases)
EP - Epin (free AP codes redeemed through the billing system)