You can unlock your account by following these steps:
Click
Forgot Your Password?.

In the pop-up window, enter the email address associated with your account in the Email Address field, and then click Send Email.
This sends a message to your email address with a link to reset your password.
In the password reset email, click RESET PASSWORD to reset your password for your Epic Games account.

In the RESET YOUR PASSWORD window, enter a new password into the New Password field.
- Your password must not be the same as your last 5 passwords used
- Must have 7+ characters
- Must have at least 1 number
- Must contain no space(s)
Note: A strong password will help to ensure that your account stays secure. For more information on how to secure your account, see Securing your Epic Account.
(Optional) Enable Two-Factor Authentication (2FA) in your account to prevent future issues with account locking errors. You can learn more about 2FA
here.