Embedded Facebook posts

Hey,
Have you added the meta tags for social? Using a plugin like https://wordpress.org/plugins/wordpress-seo/

That would get your meta setup correctly for facebook.

Kadence Themes

This goes through it in depth:
http://code.tutsplus.com/tutorials/the-beginners-guide-to-wordpress-seo-by-yoast-social-settings–wp-32840

The basics if For each post you can go in and click the “social” tab for each post, there you can set an title, description, and image to show. Once you do that give facebook a day or so to clear the cache of your site and then when you share it should share with that information.

Hope that helps,

Kadence Themes