Video does not show on page

I have followed all the instructions and videos to no avail. I just see a blank page and use Firefox Version 45. I am working on an intranet, if that makes a difference. This is for military training so I would appreciate any help I can get. I have several CMSMadeSimple web sites that I need to convert to WordPress but until I figure out the video problem, I can’t.

https://www.ads-software.com/plugins/stream-video-player/