Facebook plugin doesn't work

Simply clicked the button, authorized your application, popup closed, page reloaded with registration and login successful. Please ensure you're using your site without www. as you have your applications configured without it so if you try using it on www. it will not work.

This is REALLY strange.
I have tried with FireFox, Google Chrome, Safari, IE and on 4 different computers. Even via a remote connection, and different fb account still the same.
If I clear the browser history I can also get to the log in screen and enter my fb credentials, but as soon as I continue the popup box just closes, and nothing happens. No log in and the user is not registered in the database.
I also use the http without www, but that makes no difference for me

I have asked 3 people to try and log in using their fb account and they all say the same.
They get the popup and can enter their details and accept the terms. but then the popup closes again, they are not logged in and there are no record of them in my database....

I am at a total loss here....

Please create a new FB application following the Help second of CB Connect exactly as shown. Once done input your new API keys into backend and try again. If still not working there really isn't anymore more that I can do as to review further would need credentials for a FB that isn't working.

I tried again to create a new fb app, following the instructions to the letter.
It's still the same.
What actually happens is that when loggin into my site using the CB connect I am being logged into facebook in the background, but there is no getting into the registration of my site.
It cannot be the fb account that is faulty. I can use my fb account to register and log into other websites that has this feature and it is working just fine. Also several others has tried on my page, but it seems only you are able to get to the registration on my page using your fb account that is what doesn't make any sense....

Unfortunately the only way for me to debug issues with your specific account is to have login access to your specific account. I've just tested again and LinkedIn is working fine as well. It certainly doesn't make sense for my account to work and not yours, do you have extremely high privacy settings on your profile data? As perhaps the API can't retrieve your profile information for registration.

This is the biggest mystery ever....
I can with both fb and linked in get the popup that ask me to log in, but I'm never redirected to a registration page for my own website, instead it closes. but if I pull up the facebook.com then I have been logged in.
I have lowered privacy settings in the browser as well on the facebook profile.
I never get to the facebook login Dialog Preview box, (as it is displayed under the advanced settings in the facebook developer), only a login name and password popup box.

I cannot see you registered either in the backend of my website, did you delete the profile again as soon as you had registered?

so after you enter your details in "Log in to use your Facebook account with connectcsm." you are then redirected to the registration page of my site?