I am having the same problem
This is from the debugger
Open Graph Warnings That Should Be Fixed
Meta with name instead of property: The meta tag on the page was specified with name ‘author’, which matches a configured property of this object type. It will be ignored unless specified with the meta property attribute instead of the meta name attribute.
Extraneous Property: Objects of this type do not allow properties named ‘template’.
Parser Mismatched Metadata: The parser’s result for this metadata did not match the input metadata. Likely, this was caused by the data being ordered in an unexpected way, multiple values being given for a property only expecting a single value, or property values for a given property being mismatched. Here are the input properties that were not seen in the parsed result: ‘template’
The Facebook plugin for WordPress outputs Open Graph protocol markup using the correct property + content attributes.
<meta property="og:image" content="http://example.com/logo.png" />
It’s possible another installed plugin or theme is outputting similar content causing issues when Facebook attempts to understand your webpage.
You may test and debug specific URLs using Facebook’s URL debugger:
https://developers.facebook.com/tools/debug
