The problem seems to be half solved.
The log in for all the user groups is working only when the users log in using the adm-index.php.
If the users log in onto VB
and then goes to the classifieds, the status shows un-logged. Also, being logged out when gone back to VB
If the users log in using the classifieds 'index.php', the status also is un-logged.
The cookie path in my VB
'config.php' is 'bb' and I gave the same value.