Our newest version has more detailed permission functions.
When you made your first call after the update,the notification to enable the microphone should have popped up automatically.
If you did not see the prompt, you can still enable the permission by going to your device's settings and choosing "apps".
Then, scroll down and select "Talkatone".
Lastly, enable the microphone by sliding the slider to on.
We hope this information helps you out.