If you can't remember your password, you can reset it.
How to change the password:
1) Go to Log in page.
2) Select 'START WITH E-MAIL'
3) Click 'Forgot password?'
4) Enter the E-mail you used to register and then click 'SEND'
5) You will receive a link to reset the password. Click 'CHANGE PASSWORD' to reset your password.
* If you use SNS ID, Log in will be automatic. It is not possible to reset the password.