iPad not supporting flash and needing izip

This is most common issue for iPad device.

What you can do is login using a computer to view and download the files instead of playing the videos using your iPad.

The iPad doesn't support flash video players natively so what you'll see is a white area. 

Also the iPad doesn't support zip files natively so when you click to download the materials you'd need to use an app like izip to uncompress the files.

I hope this helps.

If you wish to reach out to our support team, you can do so here.