If you cannot hear any sound in the meeting, please follow the steps below to do troubleshooting.
Step 1 Make sure if the speaker is on and the volume is on a high value. You can also test the audio from the Settings page. Please click here to find the Settings page:
Step 2 Check whether the participants have enabled their microphone. Go to the Participant icon and make sure the microphone icons are blue as below:
Step 3 Make sure the participant does not join from a web browser. Joining from the web browser does not allow to talk. If the participant needs to talk during the meeting, it is required to join an Interactive Meeting by downloading the app at the first time.