Avalon Code Help

At the part where you have to save the cat i put both needed codes in but the fairy dude just keeps telling me to find the codes. is this a copyright thing like in Chrono Trigger?

No, there are no reports of a anti piracy thing in Avalon Code. And if there was, you would have found it much earlier. Go to gamefaqs.com and look up a walkthrough, probably some small thing you haven't done yet. Or someone else you have to talk to other than the fairy.