HELP Please-Problem for my class to connect to my classroom

Hi, could you please help me resolve the following problem? I connect to my room, and can talk and see the first person cennecting. As soon as the others connect, every field gets black, no audio nor video, and also the students can’t see nor hear me. This is happening since yesterday, today the same, I never had this problem before. Tomorrow I have another class, how can I resolve? Students were connecting and when they couldn’t see nor hear me, they disconnected. A big problem!!

Do you host Jitsi on your own server or do you use

II use jitsee meet

Directly on jitsi meet

I am not sure how to solve the issue, sorry. I think you would want to see this category.