I tested your plugin on our wordpress-site, we found a bug:
latest versions of wordpress-version and your plugin
client-computer with macOS 10.15.5 and safari 13.1.1
I embedded on a page a video from a dropbox-source with your plugin, if I click on the fullscreen-button from your player in firefox and google chrome the video will be played in fullscreen
If i click with safari on the fullscreen-button, the screen goes black and I only see the video in its original size on the left edge of the screen – but not fullscreen.
it would be great, if you could solve this problem.