Connect this site to your social network repeatedly asking

What do you mean by 'asks'? Is it just appearing in the SCLogin module while you are logged in just using your Joomla credentials? Or is it asking that when you're logged out as well? Finally, there's a setting in the SCLogin module for "Allow Reconnections". If you disable that, does it go away? That will disable reconnections altogether, but will help narrow down the cause.

Is there any instructions and a website URL you can provide for us to try and recreate the issue?

Thanks,
Alex