Game Center again

I play Hero Wars mobile. I have the game I normally play, that is not linked to Game Center. There is another game, on a different player ID, started by mistake, that is linked to Game Center, that I don’t play, and don’t want.

I just updated hero wars and for some reason it’s loaded the Game Center game.

Game Center is not turned on, and I don’t allow it to use the Cloud.

I need to get rid of the game that’s in Game Center, but have no idea how. I cannot go to iCloud Manage Storage route, as it’s not in there. I’ve tried contacting Game Center, but no reply.

there seems to be no way into Game Center from settings.

any ideas?