Perfect World is shutting down RaiderZ, effective August 7th at 1:00 p.m. EDT. The firm says that payments back-dated to May 7th will be refunded to your Arc account balance and will be available for spending in other PWE titles.
MAIET, the original developer of RaiderZ, has ceased operations, and Perfect World says that it is therefore unable to troubleshoot persistent server issues or “deliver a quality experience,” hence the shutdown.
Source: PWE; thanks Boris!