Background video does not load or play

Im having trouble getting my Background video to work. Its in the Donate section of the site. when you press the donate section once the video wont load. However when you press the Donate section twice the Background video of fireworks loads or plays. Thiers a link to my site below.

https://preview.webflow.com/preview/pcsm-6195c3ff34084577ed2208348c9fe9b2?utm_medium=preview_link&utm_source=designer&utm_content=pcsm-6195c3ff34084577ed2208348c9fe9b2&preview=55269c0eaca6f97c3ec02d769143bb93&mode=preview


Here is my public share link: LINK
(how to access public share link)