mmontesino,
I'm a little unclear exactly what redirection settings are, or aren't, working. I'll try to explain a little bit, and hopefully that helps. If not though, just let us know and we'll help you figure out the issue.
All of the redirection settings in the SC Login module are for when the user is logging in using their Joomla credentials. If you are testing with the "Login with Facebook" button, those redirections have no effect. To setup the redirections for when a user is logging in with Facebook, you need to that in the JFBConnect Configuration area in the Login/Logout tab.
From you description, it sounds like the Login with Facebook redirection isn't working when you set the redirection in the Configuration area to the JomSocial home page. Is that correct?
If so, can you check the menu manager and tell me what type of link you're using for the menu item you're redirecting too? You shouldn't redirect to URL or Alias type links. You should setup the redirect to go to JomSocial -> Home Page type menu items.
Hope that helps, but if not, let me know. If you could clarify more about what mode of logging in (through Joomla or Facebook) and the exact name and value of your redirect settings, that will help narrow things down.
Thanks,
Alex