I have installed facebook plugin, i gave app id and secret code also.When i try to register it is registering after registration
the url is: 
http://www.xyz.com/index.php?page=register&action=register&code=AQCxnRlVMdWQg2eYhlFHtU9eFKUCzJsUvYPF3eBrigRKdT6b3ky70m-GpfhSsahLpwlYurBgdSe874bX6tUIiYlC4gFMh4-WMYyryJuwFCbVIAAuy7BX7XghytRHSi9xh2EA99I_M9DBuiTKPwSMk1FVKsev5RZwsyY1-AKMNy7fRv4_yK-sJqJVdeWbmJ3uCh32ZlLTY-8oropgTkgTgHHxwG7HqgmfdKheJFfnavGI9IKKGg3TDC7hnkLo0AuCyO67oMXUZj9gWpz2Uikc0mWiuvGaGyUTl8H95dwr2ERYSQvGhWjI52MIJUU5SdbWQOLlSbQxL66U5045rqSniuCy&state=3c4147bff8b33d003ce91be82f57ea04#_=_

But the problem is it is not showing login details,it still shows as sign-in. I checked coding also.. Please help i'm unable to figure out the issue. Please 
And i have one more doubt do i need to give my app id and secret key in any file? I tried this in OSCFacebook.php but it didn't work. Please help

@Swapna
You can find threads regarding this plugin here on forums and ten of threads on osclass forum.

@frosticek
Hi
actually i checked but everything is fine. And some threads i didn't understand. And i'm not understanding how to find the error. Please help!!!