Video Header Not Working

We're testing out this theme and considering purchasing the premium version.  One of the issues we're having is with video in the header.  I've attached screenshots and think I have this configured correctly.  When we link to a YouTube Video, I can see that that video is trying to play because there is a pause icon, but we never see the video, only the stock image. https://photos.app.goo.gl/RnMMbSjyGMKAp7Nt7 https://photos.app.goo.gl/oKLyJNXianP555K48