Scheduled meeting on laptop will not successfully launch

[LCDerks]

I have MacBook Pro.  I have had challenges with Zoom prescheduled meetings.  Will schedule on app on laptop, "copy invitation" and send to my group of 30 people in advance.  Day of meeting I can either initiate via calendar link or from app and not one of the invitees can join.  I am in the meeting alone.  If I close the meeting, I can go back into the app and Join meeting from the app, but in general starting the meeting from my ICALis not successful.  Very frustrating when people think I am late to the meeting I scheduled!