Reset your password — Request a reset link from the login screen. The link expires in 30 minutes, so be sure to update your password as soon as you receive it.
Add email login — Go to Account Settings → under Email Address, select [Set Up] → Set Password. Once set up, you can use both social login and email login, and you can also change your email address from the same screen.
⚠️ You cannot switch between social login methods. (e.g., Kakao → Naver is not supported) Accounts linked with Apple or Google cannot be converted to email login.