Using the voice navigation

Two issues.

First, the navigation voice does not save when choosing a voice. I don’t like Samantha so I will switch to Aaron but if I close the app out or start a new drive the voice changes back to Samantha.

Next, what is this setting for?

“You do not seem to have voices with enhanced quality installed.

You can install new voices by navigating to your voice settings in system settings.”

On iOS the setting does nothing except brings me to the Settings app but it doesn’t go anywhere else further after that.