How do I assign Glitch Manor to an existing class account?

When my students try to click on Glitch Manor it says a parent email is needed.

Thanks!

Tynker has products for home and school, and if your school has purchased Tynker, you should see courses from our school curriculum such as Programming 101,102,201,202,301,302, Javascript 1, Python 1, Drones 101 and Wedo Coding. These are designed for beginners and intermediate students in different grade levels. Glitch Manor is an immersive game-based course as a part of our home learning plans and not available for use with schools.