Configuring the plugin – not working

Hi,

I’ve installed the plug-in, completed the fb developer section, but when I go to add the details to the plug-in settings, I’m getting a redirect to a facebook.com address and a red-boxed piece of text saying “the parameter app_id is required”.

I’d like to enter the app_id, but I’m not given the option. Any reason why this is happening?

http://ww.wp.xz.cn/extend/plugins/recent-facebook-posts/