Downloading physics galaxy videos

Hi I am trying to download physics galaxy videos which only runs on their app

http://livestream.physicsgalaxy.com/pgeducate

someone please use this log in credentials

email : kapilsharmanaini@gmail.com
pwd: password

and please figure out a way to download those videos

Note that they only come on schedule which can be found here

http://livestream.physicsgalaxy.com/live-stream-schedule