Header video shows only on Homepage

Hi there,

I’m using OceanWP theme and Elementor (basic) to build my website, and I used background video for my header. However, the video was showing only on homepage, and in other page it has a transparent white/grey (fallback picture I guess). I would like the video shows on every single page that I created (About us, strategy, etc.). Please help me out. Thank you so much in advance.

The page I need help with: [log in to see the link]