Hello, This is the Gravity Co., Ltd. Ragnarok Zero Operations Team.
After the September 7th regular maintenance, we have confirmed issues where access to the homepage and client is unstable, and the in-game mailbox does not open. These issues have been reported to the relevant department and are currently being investigated.
We will work to resolve these issues as quickly as possible, and we sincerely apologize for the inconvenience caused to your gameplay.
We will provide further updates regarding the restoration time and other details through our notices.
Thank You.
(Gravity Co., Ltd. Ragnarok Zero Operations Team)