Thumbnails Opening in Lightbox

Hi – I just installed your plugin and I’m having an issue where the thumbnails are opening in a lightbox AND are also playing above the thumbnails, under the lightbox.

I don’t want them to open in a Lightbox, but can’t see where to disable that.

The site in question is: http://nationalgolfschool.com/videos/

Thanks,
John

https://wordpress.org/plugins/youtube-channel-gallery/