This is GM Lumisade
The issue has been solved at 16:11 (UTC+0).
Now you can log into the game.
Thank you for your patience.
We are experiencing unstable connection due to
Amazon Server (AWS) issue from 14:19 (UTC+0)
We are currently investigating the cause and will try our best to fix it as quickly as possible.
If there are any changes, we will notify you via further notice.