Audio does not work in break out rooms

[Sanne1]

Since a couple of weeks some of my students loose the audio when they enter the break out rooms. Before it has never been an issue and it does not apply for all students.

They have no audio in the break out rooms and when returning to the main room their status in the bottom is on 'Connecting with audio...'. After a while some will have audio connection in the main room again, while others need to leave the meeting and rejoin again.

Why is this happening and what can they do to solve this issue?