The problem is you CAN'T change the maxplayers cvar when your server is started! When you are loading the game, the last thing to execute is game.cfg and listenserver.cfg. When you write maxplayers 5 in your console, you will receive an error message. listenserver.cfg works like that. It is only console command that you don't want to write over and over. So you CAN'T change the maxplayers in listenserver.cfg
I did it and it didn't do anything. So go to the website i wrote in my first post in this thread and Follow Rick's information. It will do the work!
P.S. For real newbies, open Notepad. Click file and then Open. Go to your esf folder and then click on the "File of type" arrow and then click on all files. With that thing, you will see all files that you will be able to open with Notepad. After that, click on settings.scr and write the code in the website i wrote in my first post in this thread BEFORE the last } Click File and Save. Exit the program and open ESF, click on Create Server and in the FIRST window you will see a new box name MAXPLAYERS, write down a number and click ok. That's it!