Click 'Forgot ID / PW' on the log in page right below.
[Fotgot ID]
① Click 'Forgot ID' tab
② Input 8 digits date of birth (ex. 1980, Jan, 1st > 19800101)
③ Input the registered mobile number (ex. 01012345678)
④ You can check the registered email address if you click 'Confirm'.
[Forgot Password]
① Click 'Forgot Password' tab
② Input the registered Email ID
③ Input the registered mobile number.
④ Click the 'Confirm' button.
⑤ Input the new password after the mobile verification. (8~16 characters of upper/lowercase and number)
⑥ Confirm the new password again.
⑦ New password can be set if you click 'Confrim' button.