The DDoS appears to be over for now, we have also moved the Tracker to a new IP, sorry for the inconvenience. We have changed providers for the tracker due to ongoing network issues. This means that the IP address used to connect to the tracker has changed. In addition shortly after changing to the new provider, we were the target of a broad DDoS which resulted in the tracker being unavailable for a period of time. This DDoS appears to be over for the time being.