There is a little bug in auth with fb and others. If you log in with hybridauth, the user status is approved by default, not following the global settings->Account registrations require admin approval ? check box.

modifying /sites/default/plugins/uni_login/uni_login.php

line 145

$reg->user_status = 1; //approved user

to

$reg->user_status = 0; //not approved user

and ./sites/default/plugins/sso/sso.php
line 52 replace

$reg->user_status = 1;

with

$reg->user_status = 0;

solved the problem.

can someome ( maybe @adesh1414127033 ) give me the global variable name of the checkbox in parameters to modify the code and follow the default policy ?