Hello. This is the Ragnarok Online: Zero Operations Team at Gravity Co., Ltd.
Regarding the unstable connection issue on the 
Brynhild server,
the fix was completed at approximately 19:39, and the game is now accessible normally.
We apologize for the sudden inconvenience caused to your gameplay, and we will provide additional information on the compensation plan as soon as it is finalized.
We will strive to provide a more stable gaming environment.
Thank You.
Ragnarok Online: Zero Operations Team, Gravity Co., Ltd.