No image showing up when post is shared to LinkedIn

My client wants people to be able to share her posts to LinkedIn and have the featured image show up. We had a similar problem with Facebook where the main website logo would show up instead of an image related to the post. I was able to fix this by adding the plug-in “Easy Facebook Share Thumbnail”. So as long as she has a featured image in the post, it will show up when the post is shared to Facebook. But no image shows up when you share to LinkedIn (not even the logo). Is there a way to fix that?

Here is a post that has a featured image: https://tvgeektalk.com/previews/josh-hutcherson-of-the-hunger-games-fame-to-guest-judge-on-syfys-face-off/

Thank you for your time!

https://wordpress.org/plugins/social-sharing-toolkit/