Attached images not displaying in social media

Hi there,

Without having made any changes to my backend, suddenly my new posts are not picking up the attached images when I share them on Facebook. Older posts still do. I’ve upgraded to the latest build ( 3.8 ) as well as updated Jetpack’s social sharing plugin with no success. Any ideas what the deal might be?

Thanks in advance,
Toko-pa
https://www.toko-pa.com