I can't fine participants in the waiting room

[Hiba_Lafi]

 When I start my meeting and send an invitation link to my participant, my participant gets the screen message "waiting for the host to start the meeting", but I didn't receive any joining requests to accept them and let them join the meeting. I cannot let them in: Zoom doesn't see anyone there for me to let in. I even tried the option to leave the meeting, and to click on the link in the email message, but to no avail.

I enabled the waiting room from the security list in the zone meeting.
How can we solve this problem?