Users never come back - using Facebook Connect

[ComoEstaEso-com]

Hello!

I just read over one hour of threads, and searching, and I haven't found an answer to my question.
So, here a new thread.

Ok, my Facebook Connect 'works'.
We get a couple of people per week signing up via Facebook Connect.

Problem is:::
I never see them back!
I have installed the Members Who Have Visited Today mod, by Paul M.

So, if I go to vB ACP >> Users >> Search for Users >> List Visitors in the last 24 hours
NEVER does a Facebook Connect user come back.
Furthermore, if I go vB ACP >> Usergroups >> Usergroup Manager
Then on Facebook Connect >> Show All Primary Users -- click-GO
It returns: No Users Matched Your Query

So... what's going on?
I'm scratching my head, and don't know what's happening.

Any thoughts? Ideas? Comments?
What could I check? Verify?

Thank you very much for your help!! Much apprecaited :up: