Problems with a BW meeting. Parallele dimensions

Hello to everybody, Im new in Jitsi and I use the jitsi meet for the Bewelcome chat every monday since three weeks. But last monday something really strange happened. I entered in the room (we use every week the same link) and no one else was in. After twenty minutes a BW user wrote me: Im inside. But i cannot see you. Same problem for some other users. They told me me they were inside, but “alone” in the room.
And the strangest thing, when after some minutes another user entered from Spain using the same link that gave problems to the other bewelcomers.
So, what happened? How is it possible?
Thank you for your help.