[Konstantinos]

All of them failed. Open server.cfg and change from the line:

pawn Код:

rcon_password changeme

the changeme to your desired password.

Also is the server for Linux or Windows? If Linux, upload all the .so plugin files* and add plugin_name.so in the plugins line (server.cfg). Else if Windows, upload all the .dll plugin files* and add plugin_name in the plugins line without the extension.

* By uploading, I mean to paste the file into plugins folder.