Thumbnails not updating in player

Suddenly yt channel gallery is not working properly. Everything displays as it should, but clicking a thumbnail shifts the page so that the player is in focus, but will not change the video in the player from the default (the first in the list.)

Example here:
https://50.87.144.124/~shattori/wordpress/videos/

Any help would be appreciated. Can’t quite figure out what’s going on, as this was working fine several days ago. I did update wordpress last night so that may be the issue?

https://www.ads-software.com/plugins/youtube-channel-gallery/