Device linking

Hello. I've recently been really getting into this game and I really enjoy playing it, however, I recently decided to make a second game. I currently play this game on my iPad and iPod. I linked the game from my iPad to my iPod a while ago. I made a new iTunes account and I signed out of my old one and out of my game center, deleted the game and re download it. My old game still continues to load even though I'm signed on to a new account. I tried removing it from game center and it still continues to load the old game. Help please? Thank you.