Facebook API Error code: 191

Hi Guys,

I installed the comment plus plugin. And all is working accept facebook. When I click on the button "connect to facebook" I get the error like underneath.

The site URL I used is: http://www.younitenews.com

The app domains I used is: http://www.younitenews.com

What am I missing?

Florian

API Error Code: 191
API Error Description: The specified URL is not owned by the application
Error Message: Invalid redirect_uri: De opgegeven URL wordt niet toegestaan door de configuratie van de applicatie.