Facebook Connect Not Responding

I just recently installed the FbConnect 1.8 plugin and input the parameters that it needs to get working; but before now, I had already configured the Facebook parameters in the Cb Connect plugin but it was never functional.

Now I've installed the Fb Connect, it is still the same. When you click on the Fb button on the Cb Login module, nothing happens. Now I have 2 Fb buttons on my Cb login module.
Please how do I sort this issue out?

You can not have CB Connect and Facebook Connect installed at the same time. Please uninstall Facebook Connect as CB Connect is the superior of the 2. Once done click the sign in button while monitoring your browser error log for any fatal errors, warnings, etc.. as you've either a fatal error causing the FB JS API to fail or the FB App is maybe misconfigured.

I did as you said but when I click on the Fb button there, a pop window just shows up and disappears within a split-second.

Here's what I got from the error log:
Warning: Unknown property 'border-top-left-radius'. Declaration dropped.
Source File: s-static.ak.facebook.com/rsrc.php/v1/yP/r/gEfIvN5KWaU.css
Line: 1178

Is there something I'm still missing?

I opened another page and also tried logging in through Fb but the pop window still opened and disappeared within a second.

When I checked the messages on my error log I saw this:

www.facebook.com : potentially vulnerable to CVE-2009-3555

Please does this have anything to do with the login difficulty on Fb?

That implies your host has an SSL vulnerability and can't make secure API calls to Facebook, which is why it won't register then log you in because it can't retrieve your profile data. Please PM backend super administrator login credentials as well as FTP credentials and will further debug to see what the exact error returned from Facebook is.

It doesn't work because your copy of CB Connect is massively out of date (1.0.7). I've upgraded you to latest (3.0.0) and confirmed it works fine now. Please understand it's your responsibility to ensure your website remains up to date. Using out of date releases will guarantee you'll have bugs.