How to prevent Ban ?
Do not share your account with too many people
Sharing with too many users might trigger Rioters to check it out
Do not change Email & Password immediately
Wait about 24h - 48h before changing it
Do not use an email that has been linked to any other league of legends account
You should avoid using an email that was previously linked to another league of legends account
If you don't do this, we will not be able to offer you the warranty.