Questions about course content

If something about the course content is not clear to you, you can start a discussion by clicking on the corresponding icon at the top-right corner of the lesson screen.

Problems during checkout

If for any technical reason you are unable to complete a purchase, please send an email to

Refund policy

All of our paid courses include preview lessons, which allow students to have a pretty good idea of what the material looks like and whether it meets their needs.

We are also very clear about the fact that we do not promise that you will pass the qualification tests by enrolling in our courses.

For these reasons, we are unable to offer refunds on any purchases and any improper refund claims will result in immediate unenroll from the course.