Video works in Post Edit, but doesn't work on the site

After much trying, I finally got video to work... almost.
Editing the post shows and can play the video.

But if you go to the post the video doesn't work.

I'm using an MP4 from my Media, and have the text protected in a read-more area (which is protected by Membership2)

I tried to add CSS/JS styling/themeing using the Scripts-n-Styles plugin, but I don't know why the video won't load, so I haven't bothered to see what works/doesn't.

If you guys have another recomendation for video, I'm all ears; I've tried
Easy Video Player, Huge IT Video Player, MediaElement.js, Videojs HTML5 Player [still active], Video Player Ultimate [still active], and WP Video...