Just to add to this, I have only done this solo, so the issue is probably not caused by other people joining the activity who have already completed it. At least not exclusively. I actually tried to do the matchmade version to see if I had any luck there (and to do it faster), and it wouldn’t put me in a group with anyone three times in a row (just looked for a long time then loaded me in solo). I’m planning to try again after reset. But i learned of two more people in our clan who weren’t able to complete this step yesterday as well. Seems like it worked for everyone I know on Tuesday and no one I know on Wednesday.