Cannot watch a recorded session after registering.

[Houghtona09]

I am attempting to watch a recorded pd session. I registered fine. When it took me to the actual session it just gives me a white screen with the title of the session at the top. I've tried different browsers and incognito mode. 

[meliclases]

My students are having the same problem. One of them told me she solved it by changing browsers (from Chrome to Safari) three days ago, however today it's not working anymore.