Drop rate of Mystic Accessory are bugged.

[Tezzeret88]

I have done much of 100 run in three days, breaks down into these two Dungeon The Aerodrom and Forest Of Echoes and i don't have drop not even once Skystealer Earring Chest and Skystealer Ring Chest. Only drop SilverSteel Soul Shield Treasure Chest. Why this drop rate is bug? Please correct drop rate of take a bonus drop rate for weeks. For example, every 2 weeks the drop rate increases by 5% up to a maximum of 50%.