Hi there @tle1 ,

Does your admin role happen to have the 'Manage Differentiation Tags' permission enabled? If not, this would likely be why you can't see the tags as an admin without being enrolled as a teacher in the course. Since the teacher role has permission to manage differentiation tags, but your admin role doesn't, that's why it won't work until you actually join the course as a teacher.

I hope this helps!
Noah