Paul – I’d recommend making a help ticket at help.unc.edu. They can get this routed to the group that supports Zoom and look into your specific situation. It’s possible that the TAs need to go back to https://unc.zoom.us/ and log back in with their onyen/password to be recognized in a new term. It’s also possible they’ve been moved into a different Zoom subaccount. Either way, ITS would be able to troubleshoot that with you!