I cant log into the game.

Obviously Your information has been changed.

(If) You know your E-mail go Here and do a password Recovery:
http://www.z8games.com/lost_id_password.aspx

If you do not know your E-mail you have to file a support ticket and and give them atleast 3 peices of information that will prove its your account (Security Answer, Original E-Mail/Pass, Any Transaction ID's) and Maybe they'll give you the correct information for it.
http://support.z8games.com