Channel Calendar only show for certain members

johnortiz I'm having this problem.  Someone set up calendar in the channel and I get the error "You don't have permission to use this app." at the top of the screen when I click the post announcing the creation of the channel calendar.  Also, I don't see the tab for the calendar.  I know my email is set up correctly.  For example, if I use my own Team and add a calendar to that, then when I create an event in that channel calendar, the event appears in my Outlook calendar with the channel as the organizer of the event.  So Teams knows how to access my outlook calendar.  The problem is something else.