Game center Clash Royale Syncing problem.

Apparently I never synced my Clash Royale account to game center. I thought it was connected. I wanted to play Clash Royale on my iPad so installed the game and went through the tutorial and this new account synced to my game center account. Since you're only allowed one account I can't sync my level 10 anymore to my game center because it wants me to revert back to level 1. I've invested to much time and money to lose all of it. Is there a way to delete the level 1 account so I can sync my level 10 to my game center? I don't know what its been saving to if it wasn't my game center account.