I will say that this is beyond the scope of my plugin but it looks like the scripts are never loaded for the plugin nor or they loaded for other pages that require other assets to load -- css or js. You'll notice that if you land on:
http://hebraaudiovisual.com/video/
then it will work every time even after visiting another page.
Bottom line -- I'd suggest a different theme. Many reasons why but you'll thank me later when you begin to realize them all.