Could not get admitted to meeting

I use two zoom accounts:  one is personal and the other is a library account to teach ESL which is under library employee name.

Last night, I joined a meeting but had forgotten to sign out of the library account.  As a result, the librarian and I looked like we had joined the meeting.  The host didn't recognize the librarian names so blocked her from the meeting.  As a result, we were both blocked.  I realized the mistake and signed out of the library account and signed back into my personal account.  I was still blocked from the meeting.  I logged in and out of zoom a few times, turned my computer off but nothing worked so I missed the meeting.  Any advice on why this happened or how to prevent it?