Site URL: https://helicon-flamingo-zrsz.squarespace.com/
I have three embedded videos on my website from YouTube. They all play in the small thumbnail image, but when I click the 'full screen' icon in the window (bottom, right), the video opens to full screen for a second, then collapses back to the thumbnail and stops playing.
For what it's worth, the videos all play in landscape on mobile.
Thanks for any insight on this issue. I've scoured the web, but can't find guidance.