I've been unable to access the Trials of Osiris playlist due to lacking access. I'm aware that there's a quest you need to progress to eventually get access. However, I never got a quest from Saint-14 and have visited him multiple times. I even tried progress the New Light quest to see if I could eventually speak to him to get the quests. All of the people I play with have seemed to have gotten it instantly. I've scoured the forums and saw that this could potentially be associated with a glitch? I'm not sure, and can't seem to find a solution.