Why cant i play on a ranked server for Battlefield 2?

I bought the game some week ago and keep getting kicked out of ranked servers. WHY???Why cant i play on a ranked server for Battlefield 2?
PUNKBUSTER

Make sure your windows user account type is administrator when updating Punkbuster and when playing the game.
Download and run http://www.evenbalance.com/index.php?pag鈥?/a>
Download: http://www.evenbalance.com/index.php?pag鈥?/a> and run the uninstall first, then install.
If necessary make sure you allow the services PnkBstrA.exe and PnkBstrB.exe from your "C:\Windows\system32\" folder (or "C:\Windows\SysWOW64\" on 64bit systems) in security software like virus scanners and/or firewalls.
In case of doubt, manually add both to your firewall's allow list.
After the installation process you will only find PnkBstrA, so just make sure this process file is not blocked.

Battlefield 2 Version

Un-updated game - 1.0.2442.0
Version 1.01 - 1.1.2475.0
Version 1.02 - 1.1.2484.0
Version 1.03 - 1.1.2551.0
Version 1.12 - 1.1.2254-356.0
Version 1.2 - 1.1.2696-528.0
Version 1.21 - 1.1.2716-548.0
Version 1.22 - 1.1.2716-552.0
Version 1.3 - 1.1.2878-710.0
Version 1.4 - 1.1.2963-795.0
Version 1.41 - 1.1.2965-797.0
Version 1.50 - 1.5.3153-802.0
http://support.ea.com/cgi-bin/ea.cfg/php鈥?/a>

Battlefield 2 Patches

http://www.filefront.com/6194285/Battlef鈥?/a> 1.41 full
http://www.filefront.com/14444947/Battle鈥?/a> 1.41 to 1.50