How to disable the Speech to Text feature in Co:Writer Universal Chrome Extension and Chrome App:
When Chrome asks for permission for Co:Writer to use the microphone select block.
If you have already allowed Co:Writer to use the microphone:
Go into your Chrome settings (top right hand part of your screen - the button with 3 black dots)
Go to settings
Go to Privacy and Security
Click on Site Settings
Click on Microphone
Toggle the switch off to the right of, "ask before accessing"
Blocked should now be displayed
If Co:Writer is displayed under allow click the trash can to the right of it.
(When turned off the Toggle should be white and it will say blocked on the left.)