I can not watch the academy video

I access
Erlernen Sie den Einsatz der Unreal Engine, der leistungsstarken Echtzeit-3D-Entwicklungsplattform - Unreal Engine

always go to
Register

When I enter information and push ‘START LEARNING NOW’ button,

always go to
Register

I tried it over and over for several days.

I have registered once with Form, and I saw the screen that will be able to see the academy video.
and I closed the browser without watching the video.

From the next time, I always go to “Please try again”.

I can not watch the academy video.

I still can’t enter the academy.
Is it an authentication database bug?