Like others I too am having an issue linking the Facebook plugin with WordPress so my pages and post will show on my timeline. Myself and my hosting company have been lookiing into this problem for the last 3 to 4 weeks without coming up with a cause or correction.
Were using the WooTheme plugin. With WordPress version 3.4.2 and Facebook version 1.1.8
API Error code: 191
API Error Description: The specified URL is not owned by the application.
Error Message: Invalid redirect_uri: Given URL is not allowed by the Application Configuration
App id: 382300705180514
App Namespace: clayton_nj
App Domains: claytonnj.com