Fixing Microsoft Edge Microphone Permissions on Desktop
Within Microsoft Edge, click on the three-dot icon in the top right-hand corner of the page and choose "Settings".
In the sidebar down the left-hand side, choose "Cookies and site permissions" and click on Microphone.
You will then see the website address for TalkType is on the list of blocked access. Simply click on the trash icon to remove this, and then you can close this setting page and refresh the TalkType website, and you'll see the pop-up window appear.