I created a Canvas Free-for-Teacher course and invited two persons to join. This was back in June 2023. Both accepted, and the course has been going on throughout the summer. We all have been posting content to Discussions, and everything was proceeding without a problem until yesterday, when I learned that both students (or Participants, I can't figure out the difference) can no longer see Discussions at all, nor can they see any of the content posted in the Discussions.
In the course settings, the two persons are listed as "Participants (inactive)" and the number of Students is listed as None. Is that a problem? Why are they listed as "inactive" participants? They have been quite active throughout the summer.