Please check a page with OG data provided by this module, add a facebook like button.
Try to like this page and Facebook will give you an error.
Go onto this Facebook page, you'll see why: https://developers.facebook.com/tools/debug
Some required data are missing. In html section you should have more metatag:
<meta property="fb:admins" content="your_admin_id"/>
Some others metatags can be added, Facebook debugger shows them.
I putted "major" priority because any OG sharing is broken.