Kigen's Anti-Cheat

Hello, a few days ago I was playing Team Fortress 2 on a server where I had been playing for a little while now, there was no one on the server at the time so I was just jumping around testing a new spray I had made.
Then when I was about to leave the server and go look at the commentary levels (I had never looked at them before and was curious) I got kicked from the server and it said I was banned, so I went to look it up on the servers website and they linked me to a site that told me I was banned for : KAC: ConVar sv_cheats violation.

I can admit I'm not the most tech savvy person so I had no clue what that meant, I assumed it meant the console thought I was cheating in someway, but I can assure you I was not cheating or hacking or anything of the like, to be quite honest I have no Idea how (never looked it up and don't plan on it, the game is perfectly fine the way it is in my opinion).
I posted on their forums asking about it and they sent me here. I was hoping you could at least give me some insight on what happened.

Hoping to resolve this as I really enjoyed playing on that server.
I have checked it on this site and it says the ID is not banned, is it possible to only be banned from the one server?
I have also not had any problem getting onto other servers I normally play on.

Steam ID: STEAM_0:1:18743350

Thanks : )

Is there anyway this might be a bug? only seems to happen on the one server.

If you check their ban list http://torontodarkly.ca/bans/ it says I've been banned by KAC

You need to contact the owner of that server. We cannot help as we do not have access to logs or any other relevant information.

~Locked