my friend (let say A) quit from the game and he gave me his account… first i play it well and then someday i let my friend (let say B) to play that account but he make something bad with that account so i take it back and change the email but untill now B still can login even i unbind my account.
my question
how he can still login even i changed email and unbind my account? and how to stop him to login to my account?
You can certainly open a support ticket on the official server. But fairies will see that the account belonged to someone else before and then they will lock the account completely.
Sharing accounts it not allowed
Handing your account to someone else is not allowed
Selling your account or anything in game is not allowed
Bots or account synchronisation is not allowed
If your account is bound in multiple ways and other players have the information saved and/or never logged themselves out, if you use a facebook account for example, they will continue to have access to the account. So it’s not a bug. If you share your log in information, you need to expect them to play on your account as well. That’s why you should never share your account information with anyone.
Even Fairies will not ask for your exact information.