Facebook Text Posts vs Article Posts
When you first connect a Facebook account to the plugin the default settings will share your posts as text posts with a link back to your website, if, you have not verified your website domain with facebook:
It's however more appealing to have your posts shared as article posts to Facebook which include a featured image and a large clickable area like below:
To achieve this type of post shares, you need to verify your website domain with Facebook. The process is fairly simple and takes a few minutes.
Facebook has created an article for going through the process, see here: https://developers.facebook.com/docs/sharing/domain-verification
Once you've gone through the verification process, the change might not be immediate, so please have some patience, if a few hours has passed and your shares still do not appear like above, then try disconnecting your Facebook account from the ROP dashboard and re-adding it and test sharing again.
If you're still not getting your Facebook shares to appear like above then please send us a support ticket here.