Hello, Heroes of Bermesiah! We have encountered an issue where Harrier Gate Box would not drop when players receive Harrier Dungeon Item Drop Rate +100% buff. We will be providing Harrier Gate Box by mail for all players who have completed the dungeon based on the number of Harrier Dungeons completed. We will strive to ensure such issue does not arise again in the future. We will try our best to fix this issue as soon as possible. Thank you.