Enabling the Address Autocomplete functionality can save customers from making any mistake while writing their shipping address.
Navigate to WC Plus > Options > Optional tab.
You’ll see the Enable Address Autocomplete (Google Places API) option at the top of the page.
Go to this page and create an account for the Google Place API key https://developers.google.com/maps/documentation/javascript/place-autocomplete
Once you get the API key, copy it.
Paste the API key in the box named Google Place API Key. Toggle on the functionality below the box.
Choose your desired countries to provide addresses using the API key.
Press the Update Settings button to save changes.