Appt Not Setup : app still in development mode

Hi

I have an issue using this plugin.

It displays well on my sidebar but there is a “Share” button which does not work.

If I click on it (as a user), I get to a facebook error page saying the app is under development mode.

Please see screenshot at http://imgur.com/UGHN0CP or check directly on my page http://www.abcargent.com.

Can you help?

Nicolas.

https://wordpress.org/plugins/facebook-pagelike-widget/