Invalid Token on normal user registration

Glad you found the issue with the Invalid Token. Really wasn't sure what was going on there.

As for the login module, sounds like you got things going. Feel free to just post the changes you made here, it may help others as well if it's public (and you're ok with that). When you change the template files for the SCLogin module, we highly recommend using a template override. That's where you copy the /modules/mod_sclogin/tmpl/login.php to /templates/<YOUR_TEMPLATE>/html/mod_sclogin/login.php Once it's there, you can edit it all you want and your changes won't be overridden when you update.

Finally, if you haven't already, please consider leaving a rating and review for JFBConnect or our support on the Joomla Extension Directory. It's certainly not required, but very appreciated:
extensions.joomla.org/extensions/social-...ook-integration/7215

Hope that helps, and glad we got you going,
Alex