Background video not showing

Hi. My background video is in place but when I share a preview link the video section appears white. But when I click the logo or toggle the preview THEN the video shows. So the video is there, but for some reason is hiding.

I came across some discussions on the topic, with some solutions (increasing z-index), but it does not help.

Another problem I have with the video, when opened in Safari it is glitchy af. Very strange.
Anyone got some ideas? :kissing_heart: