change email

Hi i usually used steam before to connect to the game so i had no problems but i downloaded the client this time to play on it and i just realized someone got access to my account and changed mail and password (got hacked i guess) and then i cannot find any way on the website to change my email back or my password since i don't have access to the mail that the guy put on the account i'd like to get my account back if possible

You'll need to contact Support directly about this - using a verification code, if possible. This soon after a league launch, the ownership verification process is likely to take an extended period of time.