This maintenance guide.

2-3 days replacement work is expected to be within a server.
sites are blocked and the action takes the expected time of 2 to 4 hours, but can be delayed further.
uncomfortable even do you approve. Scheduled maintenance Notice . We have plan to change the Server within 2 ~ 3 days. During maintenance, website Will closed and it takes 2 ~ 4 hours. Apologize for any inconvenience and Detail Notice Will be followed in later.