We've migrated the UKCT (and consequently the Odd Combo Club) server to a new datacentre over the last day or two, because of reliability problems (you may remember them!)
The server is back - you probably didn't notice it go down, because it was only for a few seconds - but there seems to be a problem with the OCC webpage. Insim messages aren't being sent to the server, and I'm at a loss so far as to why not. I'm trying to figure out what's changed at the moment. In the meantime, please feel free to send me a PM if you want to limit the server to a specific class/car in the game to prevent people messing about during your evening.
I'll get the site working again ASAP, just as soon as I figure out what the problem actually is.