Video widget – no cover image

Previously the video widget automatically displayed a cover image from the video and the video title. I’m not sure if this changed in the last update or a previous one however there is no longer a cover image displayed. I cannot see any way to choose a cover image despite your Video Player Widget page (https://siteorigin.com/widgets-bundle/video-player-widget/) saying this:
“Use the Choose Media or Image Search buttons to add a cover image.”

Just having a black screen with a play arrow doesn’t really make someone want to click play.

The page I need help with: [log in to see the link]