Hi PatUSF-2878,
Do all the people have the same issue?
As I know, for the recurring Teams meeting, the conference ID will be static.
Please check if the meeting organizer create a new Teams meeting which has the same conference ID.
As a workaround, you can try to reset the conference ID by this article: https://learn.microsoft.com/en-us/MicrosoftTeams/see-change-and-reset-a-conference-id-assigned-to-a-user-in-teams.