دلیلی که خودشون برای دان شدن ذکر می کنندDDoS است: اینجا:

We are currently experiencing an outage due to a DDOS attack which is ongoing at this time. Our network admins are in the process of mitigating it.

The licensing system used in WHMCS will mean this outage has no impact on WHMCS installations providing a valid local key is present.

Matt