Welcome! This forum has a treasure trove of great info – Scouters helping Scouters! Just a heads up, though - all content, information, and opinions shared on this forum are those of the author, not the BSA.
I am having the same problem. I am the awards chair and although I see all scouts in the roster, when I go to add scouts to the activity log for an event, the dropdown menu says no data. I could do it last month, but no longer. I also see no data when I try to add scouts to old events. I have cleared cookies, but that doesn’t work.
@DanielleAshweek - has your unit key 3 reviewed and made updates to the permissions in permission manager as noted in the blue banner at the top of the forum