I checked both courses(basics and advanced) but in my case I'm able to see the videos.
If you haven't already please try the following:
- Clear the browser's cache or open the page on incognito
- Try a different browser and let me know if it fails to load the video too.
If that doesn't help please send us a screenshot of what you are seeing, and also please check the console in the dev tools to see if there are any errors logged there.
Thank you and sorry for the inconvenience