Alex,
Thanks for your help. I'm running v4.3.2 but Open Graph Plugins are 4.3.0 .... are they available in 4.3.2 ?
When I read their message and go to the Guidelines Built-In Read url they provide , I think this mentioned sentence is important : "A clear way for users to remove any read stories that were published by your app and include this option on the same page where the article is hosted" especially "on the same page".
As I can see, in your popup, it's open a new page to read stories user has published ... maybe it's a lead.
I will not re-submitting until you get back to me
Thanks
Eric