Problems with Posts

Hello,

I am using the plugin to enable Linkedin share of the web site content.

I create a page and a post, both with the exactly same content (picture and text).
To the page, everything works.
To the post, the picture doesn′t appear in the Linkedin share.

What can I be doing wrong ?

Thanks,

https://www.ads-software.com/plugins/open-graph-protocol-framework/