I am aware now that this is a bug (again), i used my black armory key after finally being able to acquire it (after u fixed the mold problem). Of course it didnt unlock the cube, so now i am stuck without the key or the mold and a rare bounty running out in the next 5 days. I am very angry at the moment that you botched it again. I think at this point you should give us Izanagi or atleast the key. Having to grind for the key again would be a huge insolence towards ppl like me who have supported Bungie by paying for the base game and every single DLC