Cancel a VPS. DEFAULT `end_of_period`: the server stays active until the end of the already-paid period, then is simply not renewed — NO data loss now, safe. `immediate` DESTROYS the VM and ALL data right away, permanently and irreversibly, and REQUIRES `confirm` set to the exact server hostname (see get_vps_status). Use end_of_period unless you explicitly intend to wipe the server now. On `immediate`, the unused portion of the already-paid period is refunded to your account balance (see `refund_amount` in the response).
ConnectorNo auth