sound problem

I’m struggling to get anyone from Zoom to help me.

I have an iPad (8th generation), which I usually connect to my main TV with an HDMI cable. When I play YouTube on the iPad, both the picture and sound are transmitted perfectly to the TV.

However, when I join my Zoom Pilates class and connect it to the TV, I only get the picture — there’s no sound.

Can anyone please advise me how to get the sound from my Zoom Pilates class to play through the TV?

lee