Hello, This is the Ragnarok Zero Operations Team of Gravity Co., Ltd.
After forwarding the issue to the Game 
Guard side for confirmation,
it was confirmed that a large number of users attempting to update Game Guard
after the end of the regular maintenance caused server load and resulting traffic issues on the Game Guard update server.
For customers who are unable to proceed with the Game Guard update,
please delete the [GameGuard] folder from the installation files and try reinstalling.
If the issue persists even after reinstalling, please leave a 1:1 inquiry and we will check and provide further guidance.
We will continue to strive to provide a more stable service environment.
Thank you.
Hello, This is the Ragnarok Zero Operations Team of Gravity Co., Ltd.
We have confirmed an issue where the Game Guard update is not proceeding smoothly,
and this has been forwarded to the Game Guard side for review.
We sincerely apologize for the inconvenience caused to your gameplay due to this issue, and we will do our best to ensure normal service is restored as soon as possible.
Any further updates or notice of normalization regarding this matter will be provided through updates to this notice.
Once again, we apologize for the inconvenience. Thank you.