I was making up codes for RCR (NES). I was doing fine. Then I went back to check the codes I made and they no longer worked. So I was like maybe I just wrote em down wrong or something, went back and tried the originals and they don't work either. However, the game genie still "works" in the sense that you can still play your games and the code screen shows up at the start, but the codes no longer work. Is there a "protection" feature I never knew about or what???