DO YOU USE ZOOM FOR SUNDAY WORSHIP? If so, note that ZOOM is making security changes that are taking effect on PALM SUNDAY including requiring a password for previously scheduled meetings. If your meeting URL already includes a very long string of LETTERS after "password=" you should be OK. If you are using their old-style URL which is just a string of 9 NUMBERS only, you need to resend out your meeting link. Some congregations are sending out the entire Zoom meeting invitation info, including the phone numbers for calling in, and the assigned password, just to make sure no one is shut out.
Waiting Rooms will also be turned ON by default. Make sure someone in your meeting is the official "host" of the meeting.
Here is a link to the Zoom updated password information page: https://support.zoom.us/hc/en-us/articles/360041408732