Vimeo Autoplay video in the Launch theme stops when you scroll down the browser

[tfurukaw]

My site is: https://radair.io/

You can be on a PC or Mac, laptop or desktop, Safari or Chrome.

The second section is a video hosted on Vimeo, that will auto-play.

But as soon as you scroll down, the video stops.

Does anyone know the issue and how to fix this?

Thank you

Tom

[tfurukaw]

I am using the Launch theme so trying to stick to the template features. The Launch template does not allow videos in the top section.