Simple Sub Forum Problem

[abud]

Hello,

I'm building new site and adding some phpbb mod.

I added Simple Sub Forum mod on my board. I have a problem with my index page.

I have forum page like this:

Car Forum
- Mitsubishi Forum
- etc..
- etc..

When someone posted, topic and posts on viewforum count but topic and posts do not count? why it happen? could you help me please?

Please check this:
http://www.abc.com/ ---> index page
http://www.abc.com/car-forum-f92.html ---> forum
http://www.abc.com/mitsubishi-forum-f44.html ---> subforum

topic and posts on viewforum count but on index topic and posts still 0.

What do i have to do?

Thanks for your help.