2/19 UPDATE: The servers are confirmed back to online.
Some of our servers are going to be offline for emergency maintenance.
Maintenance window: 2/17 00:00 JST
Affected scope: website, document site, and license server
During the period, website and documents will be unavailable, new installed SDK will not be able to activate.
The servers should be come back on Sunday after maintenance.
Support site (this site where you are seeing this article) will still be available.
Sincerely sorry for short notice on this, we will be back very soon.