I am running 5.0.8 on my staging site.
I am running Integrity, and I have my homepage set to Blank - No Container|Header, Footer
I have set my CSS to disable the box shadow for content
In Section, I have enabled background advanced
It doesn’t matter if I use lower or upper, Pro will not load or recognise my uploaded video. I also tried with the CSS removed, no luck
If I link to it, it shows the video in the header area, as a thin strip up against the title bar
When I load the video via Wordpress/Gutenberg, it works fine