Yes, this is very common, when I registered for Denodo Training On-demand course.It also shows for me that the course will expires in X number of days. It means, I am left with X number of days to access the course or watch the On-demand videos. After that we are unable to access the course.
I wanted to let you know that students/users have access to the on-demand course for a specific period of time (until the course expires). Also you can refer to [Denodo On-demand Training F.A.Q](https://www.denodo.com/en/denodo-platform/services/education/courses/on-demand/faq)
If you have more questions related to training courses then we recommend you to write to us at email@example.com