Getting error code 102021 if participant joins webinar before it host starts

We are having issues with our clients trying to join a webinar meeting before our host starts it and they receive this error.

I had this issue when we were developing it, but it went away randomly and started showing the joining participant that it hasn’t started and gives the scheduled webinar date.

Please let me know any solutions to this.

Thank you,


Can you provide the payload that is sent when creating the webinar.