Once I got "legacy: challengers proving" it asks on step 2, to get the "Decrypting The Darkness" quest from the decoder, and it simply isn't there. So far I have: Cleared D2 cache, reinstalled the game, deleted and restarted the character, completed the shadowkeep, forsaken, and beyond light campaigns, done all available season content so far, done all new light quests, and it's STILL not there. 3 days of troubleshooting and the quest refuses to appear in the decoder. I've seen lots of others have been having this issue, some for as long as a year...without the ability to focus engrams the character with the issue becomes pretty useless for a lot of things/progression. This really needs looked at, soon.