Featured image does not show up on Facebook after using Publicise

Hi,
When I use share a post on Facebook and Google+ using publicise by Jetpack, it does not show up the featured image on my Facebook page and G+’s timeline.

My site: https://travellingidesofmarch.com/
Currently I am trying to share this post: https://wp.me/p5ymoT-q4

I also have WordPress SEO by Yoast installed and am wondering if there is something I’m doing wrong. Please help!
Thanks!