Facebook Login Button Not Working

Hi Alex, I recently submitted a request to add my website to the Facebook App Centre. Here's the response I got from the review team that concerns JFBConnect:
"Web
Your app's Facebook Login button does not work. Please make sure the provided test user can successfully and consistently log in with the Facebook Login button. See more about authentication."

I had always known that some of the Facebook login buttons were not working but I ignored them. Now I want to get listed in the App Centre, it is obvious that I've got to get all of them fixed.
Here are the buttons that are not working:
1. The login button on pages shown to guests here - smssenda.com/sms/home/my-profile-80?view=login
2. The login button on the Jomsocial login page - smssenda.com/sms/social
3. The facebook login button on all the SCLogin modules except the one on the front page. You can see the rest of the modules published under the 'Login/Register' menu on other pages of the site.

I hope to hear from you soon.

Sorry Alex. the mistake was from my end. I have turned on the setting and everything's working fine as it should.
Thanks for your prompt response.