After logging in, click the "Cancel Membership" button at the bottom of the "My Classroom > Edit My Info" page. Please note that all learning history will be deleted upon withdrawal.
On the login page, click the "Find ID/Password" link and follow the identity verification process.
In the "Online Education" menu, select the desired course, and then click the "Apply for Course" button on the course page.
After completing the course, you can receive it via the "Issue Certificate" button next to the course on the "My Classroom" page.
A full refund is available within 7 days of payment, provided you have not started the course. For details, please refer to "Support > Terms of Use".