Did this, seems the server is very unstable now. Often lag shocks / server rebooting every 15 minutes too.
My server keeps going to 8 player CO-OP mode, and is getting hijacked, even though I have it set in the config not to. I can't see my server in the game browser either. I've done full wipes, and re uploaded the server.cfg file, but it's still not working at all.
I have also been having a lot of trouble with Config file changes very clearly not being applied after I save and restart from the Gameservers browser. We tried to make changes in a dozen ways, but it seemed as if an older cached config was being applied somehow, repeatedly.
I reported this, but the answer was not extremely helpful (They said to change some lines that were already commented out, and closed the ticket). Today I began making changes by stopping the server, and using ftp to apply the new change. Then hit the restart button, and just ignore the config editor in the members area. I also would change the default startup map to test that the change was applied. This seemed to work, finally.