Hello.
This is the Gravity Co., Ltd. Ragnarok Online: Zero Operations Team.
We would like to inform you about an issue related to GameGuard.
A GameGuard update was carried out during the regular maintenance on March 7, 2018,
and since then, we have received numerous inquiries regarding GameGuard-related error issues occurring on some PCs.
The department in charge and nProtect are currently investigating the reported issue,
and for smooth gameplay, GameGuard operation has been temporarily suspended, so please take this into consideration when using the service. (Update)
We apologize for any inconvenience this may have caused,
and we will do our best to identify the cause and resolve the issue as quickly as possible.
Thank You.
Gravity Co., Ltd. Ragnarok Online: Zero Operations Team