Hi!
I believe you might see a previously cached version of your site. I just tried on mobile devices, IE, Firefox, but it all apears okay to me:
– Mobile video: https://www.youtube.com/watch?v=WyHbiCocAjQ
– IE Edge video: https://youtu.be/8Dinl0_5XFc
– Firefox video: https://youtu.be/zLiBUsoWM1Q
If you see something strange or broken, it is 100% a cache related problem. Especially if you previously opened those pages in those specific browsers. From this plugins perspective there is nothing I can do to force the cache to update, it has to be done via the caching solution you are using.