Looking briefly at the page you've run Autotune for, it appears that you're using EasySocial. If you want the user to be forced to accept terms and conditions, then you will need to set the 'Registration Component' setting in JFBConnect to "EasySocial". When the user presses the social network login buttons, they will then proceed to the EasySocial registration flow and whatever you've set in that component for the terms/conditions will apply.
-Melissa