problem signing in as host

[dsimonis]

I have had no problems signing in as host for the past 3 years, but for the past few meetings, am suddenly unable to sign in as host. I can click on join and get in that way, but then am not the host. I thought the problem was that some people were arriving before meeting time, and I would get a msg that the meeting had already started. So I tried signing in as host even earlier, before them. I got in, but nobody else showed up. I learned by phone that they were all in another meeting, waiting for me! I could only get in by putting in the meeting ID, etc. and clicking join -- not host.  But how could there have been two meetings? I only scheduled one! Since I was not host, I couldn't mute others or make someone else co-host or host. Hope you can help, since I can't figure out how to get help from Zoom customer service.