Unzip the code, open the iOS project in Xcode, and put Current web app URL inside the line 13 of NetworkManager.swift file.
Open the Android project in Android Studio, and put Current web app URL without https://script.google.com/ inside the line 13 of ItemsApi.kt file.
Run the app and place the order.
You will be able to see the order inside the Orders tab of your Google Sheet.
If you have any questions or feedback, please let us know firstname.lastname@example.org.