My daughter's friend has loaned me her ipod touch so I can work on upgrading her clan castle but she only has 2 builders. I'd like to spend $20 or so to buy the necessary gems to give her at least 4 maybe 5 builders but cant do so because her apple id is linked to her parents (and I dont have their password nor do I want to spend money on their account). Is there an easy way I can buy her the gems through perhaps temporarily changing her apple ID to mine? What I'm frightened of, is if I change it, somewhere along the lines I will get compatability issues or it will recognise 2 CoC games with the same account and kick out mine (which I've spend weeks on and naturally dont want to lose).
Any advice here would be greatly appreciated.