Question Problem with kunena???

I have installed kunena forum (version 1.5.6.) on my website and i thought all will be ok.I created two sections private and public for my clan.With public seciton all is ok but with private i can t see it.I created few accounts and each account has other rank. Sometimes i can see the private section but more times i can t see it.I was searching about this problem and i found that problem is in GROUPJIVE .I don t know anything about this and where i can create table `jos_gj_jb`...So can some help me with this problem that my both groups on forum work fine when i set the rank for some registred user and what he will see?!?!

My private part of forum is on the author rank (one of Joomla ranks).And i tried registred with the test account.I promoted it on the author rank and i could saw private section.After that i tried with the second test accout which is also promoted on author rank but couldn t saw..This problem is also with my admin account.Me like super admin or forum admin can t see the private section and with every second accunt which is promoted on author rank.So is than problem in Groupjave or FB or something else???Is there maybe some file which can fix this problem that all accounts which are promoted on some higher rank than "register" rank could see normal the private section of forum?

You should set forum permission as recursive to get others as authors to see it, too.

If you change users joomla group, you need to go to Kunena admin and save that user in order to refresh cache. Or you can just save any category -- it will clear cache from every user.