Originally Posted by thewintersoldier97
Weird. Pretty sure I turned on the RCON on the server.cfg file. Or do you mean there's another setup somewhere?
I meant the server control panel from the hosting. My ISP has a separate RCON access setting in the control panel (see screenshot). And by default RCON access was denied here. Therefore, the program did not work, despite the server config. Check the server settings in the control panel of your provider, maybe there is something similar there, which blocks external RCON access to the server.