Our app uses Google maps API to calculate the delivery/destination distance and then shows up the rates as per the distance.

So, you will require a google maps APi key for the app to work as shown below. You need the Google Maps API key for the app to give the delivery rates as per the calculated distance. Please refer to the below video to enable the Google Maps API key.

https://www.youtube.com/watch?v=Vqlzi8CAMEY

Go to settings of the app and add the API Ker as shown below.

https://lh5.googleusercontent.com/tycScJ60uLE8xRFSW6XRFhZga4WzGwz2G8g580aC-WpBPIVyeNyTyAJSUp6w5gd7Lmd8QQjp1yYuTRzkMXQKL3bVL6033AVLZfRtPG7Lq41TnvDUar8VPdJV5-2co1zhmuvhctPrvbfD7xue

You can know more about the google APi key using the link below.

https://developers.google.com/maps/documentation/javascript/get-api-key