If none of those settings have any effect, it likely means that there is some other extension (likely a user or system plugin) that's forcing the redirection.
With that said, can you let us know how you're authenticating: with a social network or with standard Joomla credentials? If with normal Joomla credentials, can you test the standard Joomla mod_login module to see if the same behavior occurs? If with a social network, please try setting the Returning User Redirection setting in JFBConnect to some other pages to see if they all don't work, or just the profile page.
Thanks,
Alex
Redirect after login
