incorrect message waiting for host to start this meeting

for the past two days, people attempting to log onto a meeting I've set up as host incorrectly get a message saying "waiting for host to start this meeting".   People log on using a link that I previously sent them via email (I've been doing this for several years without a problem).   Any remedies?  I haven't changed any settings in my Zoom account.  I'm a single user and thus the account administrator.