Someone Hacked My Friend Server. IP server : "LittleIyan.aternos.me"

Please log in into your Aternos Account and change your password!
Make sure that the password is only known by you and noone else!
Also check if the mail address of your account is correct and owned by you.

Go to the players page and check the op list and remove all untrusted players.

Quote from Roman

Please log in into your Aternos Account and change your password!
Make sure that the password is only known by you and noone else!
Also check if the mail address of your account is correct and owned by you.

Go to the players page and check the op list and remove all untrusted players.

I assume you just used an too easy password. Also playing with cracked minecraft is much less secure then minecraft premium.

To avoid such problems just do what i wrote and buy minecraft instead of using cracked.