Host and guest entered with the same meeting ID, but an error occurred

[amyamy]

1. I entered the password received by copying the invitation, but an error occurred

2. It is marked as being in a different meeting with the host, so entry is not allowed.

What problem is causing the error?

[Jameswalter]

Enter meeting ID and passcode manually
Log in to the Zoom mobile app.
Under the Meeting tab, tap Join.
Enter the meeting ID, then tap Join.
Enter the passcode, then click OK.