We would first like to sincerely apologize for the inconvenience caused to your gameplay.
We are currently looking into the issue of reward mail for maintenance and issues not arriving.
Please see below for more details.

Reward Mail Distribution Issue
1. Affected Mail: Reward mail that has a receipt date, such as maintenance rewards and issue rewards
※ We will update this notice when the issue is fixed.

We would like to apologize for the inconvenience. We will make an effort to solve the issue as soon as possible.
Thank you.