If you are a listener, and you are about to speak, ask the moderator to unlock the sound for you. Note that you can not turn on the microphone while your access to the microphone is locked. Therefore, ask the meeting moderator to unlock your voice.
Then you need to click the mute button at the bottom of the screen to tap mute if you do not have access to the microphone .
After clicking on leave audio, you will see the following image:
Then you see the image as below:
Then click on the same mute button to be given the voice access message again if you have a voice license.
Then you can click on the microphone.
Wait a few moments for your audio system to connect and sync.
If there is no problem with your internet connection, you can easily connect to the meeting.