UPDATE : This is now resolved and working fine!
Are you not able to log in via Facebook? Login via Facebook has been experiencing a hiccup.
If you are not logged in to facebook and you try to log in to any application which support Facebook login like one of ours http://www.socialnetgateapp.com/, you’ll end up with an error page.
The redirect URL from Facebook API is wrong https://www./login.php?skip_api_login=1&api_key= Where the “facebook.com” before “/login.php” is missing.
This goes the same for all apps that uses Log in via Facebook. There are bugs reported on the same. https://developers.facebook.com/bugs/501708806589323/
It will work fine if you log in to Facebook first, then try loggging to the app via Facebook login. This is the solution for now.
We’ll keep you posted on the update. Stay tuned.