If the course duration has not expired, it is possible to repeat the lessons.

However, this may vary depending on the course, so please contact the respective administrator for more information.

You can extend the course duration by clicking the "Extend" button in the "My Classroom" section under the ongoing course.

Please note that it may vary depending on the course, so please contact the respective administrator for more information.

The course starts from the day the payment is completed.

Please note that it may vary depending on the course.

If the course includes course materials, such as lecture slides or handouts, you can download them.

Please check the "Course Materials" section in the course classroom under the lecture outline.

After payment is completed, textbooks can typically be received within 1-2 business days. However, delivery times may vary depending on the circumstances of the courier service.

Currently, notification functionality is not supported.

Yes, it is possible. However, depending on the internet environment in the country where you reside, you may experience difficulties in watching the courses.

As the refund process may already be in progress, please contact our chatbot or use the 1:1 inquiry system to get in touch with us.

Payment errors can occur under the following circumstances:

1. 1. Exceeding the credit card limit.
2. 2. Incorrect input of payment information.
3. 3. Payment timeout.
4. 4. Failure to install security software.
5.  

After checking these four factors and if the issue persists, please contact the respective card issuer.

(It would be helpful if you could provide a screenshot of the error screen.)