Background video overlay colours aren't working

Site URL: https://recorder-octopus-4br6.squarespace.com/

We are trying to use a video background on the homepage of our new website:

https://recorder-octopus-4br6.squarespace.com/

Password is: inprogress2021

When placing a video background on the webpage, everything looks fine until we stop editing the block. Then the colour style and overlay we are trying to use resets to white text on a white opacity video.

I've used a link from both vimeo and youtube, and the same issue happens.

Please help!

Hello - did you solve this?  I am having the same problem, works ok when editing but no opacity when saved.

thanks!