trouble with clash and new ipad

[btwo5]

i brought the ipad mini and gave my ipad 3 to my brother,

however he logs into game centre and apple store with his email and pass

when i log into the mini using my gamecentre and pass i get my data

but on his ipad he still gets my game and when i log in it logs him out vice versa

[Sanjakimo]

i brought the ipad mini and gave my ipad 3 to my brother,

however he logs into game centre and apple store with his email and pass

when i log into the mini using my gamecentre and pass i get my data

but on his ipad he still gets my game and when i log in it logs him out vice versa

Im not 100% on this so people feel free to chip in and correct me. I think CoC uses your specific apple devices ID to tie to your village. I think your brother will have to backup the iPad, and format it to its default factory setting. When he goes through the process of setting up the iPad again, tell him to create a New GC with new email address just incase and he can start a new village. This should hopefully fix the problem in theory...