If you did block the microphone access, you will see an squared X below the camera icon in the address bar. This is the indication Chrome gives you to show you app.toky.co won't be able to access your microphone.
To re-enable access, follow the steps below:
- Click on Secure in the address bar, and locate Microphone and Notifications
- Click Always allow on this site for both of them
- Refresh the page, and the squared X should be gone