Session Time & Staying Logged In Issue

[Pro-eSports.com]

I am looking for a mod or code edit to have the session length not affecting "Who Is Online".
Everytime you're inactive for a set amount of time (session length) then you have to log in again. Now when I make the session length 1 day then you only have to log in once a day, no matter how active or inactive you are. But then the problem is that the user is appearing in the "Who Is Online" for 1 day even when he is offline. When I choose a short session time (5 minutes) then you have to log in everytime you're inactive for 5 minutes which happens pretty often. A lot of people keep their forums opened in the browser while doing something else (having a match on PlayStation 3, eating, having a dump^^, etc.)

I also have a private phpBB forum and there the session time is not affecting "Who Is Online". It refreshes every 5 minutes but you're always logged in, at least if you have checked the "Remember Me" box.

Can someone please help me to get it the way I want it to be?

EDIT: Nevermind, it's fixed. I deleted the cookies for my site and also created a new style through the style manager. I don't know which of the both things fixed the issue though.