Got all my 3 acc's halted at the Iron Marches chest; bugged well over a week ago since today ill be getting my 11th key from the kraits. Always engaged the kraits and the chests according to the achievement list, from top to bottom and they all bugged at the same time for me. All acc's halted the same day at the same chest ofc, plus after the Iron Marches chest failed -> all chests are still uninteractable (is that a real word? Anyway. [2c]). (Finished the achievement twice before it bugged at the IM chest)