Please make sure that the App is updated and also you're distinguishing between 'Demo' videos and 'Learn The Movement' videos.
Here’s a full video showing the distinction between the two types of videos, and how you can easily access your choice of video: https://youtu.be/dbSkRLb5zcI
If you are still having issues, please follow these quick troubleshooting steps:
Log out of your account
Restart the device
Log back in