You can log in with both your ID and account email.
However, if you log in with your social media account, you will be joining using the email registered in that social media account. Therefore, please check the email address of your social media account.
If there isn't a way to check the email address or if you do not remember the login method, please request an account info check by pressing the Inquiry button. Make sure to include the following information when sending the email.
1. Frequently used ID
2. Frequently used email account
3. When you mainly participated (e.g. MM-MM, YYYY, etc.)
4. Where you mainly participated (e.g. Crowdsourcing request / KO<>EN Arcade, etc.)