Hey I really need some help, I've tried posting but no one's answered. I can't start the quest to unlock the Prismatic Recaster. The Umbral Decoder in HELM never gives me the Deciphering the Darkness quest. I have tried making a new character and am still stuck. I have the quest "Legacy: Challenger's Proving". I've tried everything I can think of but nothing is working and I can't use the recaster whatsoever.