Social image preview not working on LinkedIn

Site URL: https://www.sunspringfarms.ca/

Hi there, 

Last week, the social sharing icon for LinkedIn was working fine when you posted our site's URL into the post. However, over the weekend the image no longer shows up and I can't seem to get it working anymore in any new posts when I include the site URL. Any chance there's a bug happening with the preview function? We have partners sharing our site and running into the same issue as well (see image below) which is impacting our marketing performance.