Kigen's Anti-Cheat

I started playing CS a few years ago, took a break and started playing again recently. However, I came on today to join my favourite local server - Toronto Darkly, only to find my Steam ID (STEAM_0:1:16218443) banned? I discussed with them the details and they said it wasn't a local ban it was a 'KAC global ban' and that i wouldn't be able to play on another KAC server? I haven't done anything wrong and more so my steam account has yet to see a single ban, or kick from any server (aside from having to high of a ping...)

I would like an explanation as to what I have done wrong.
details >> http://torontodarkly.ca/e107_plugins/fo ... hp?47715.0