I have my app which requires a license to use properly, so when the app loads up I check to see if they have the license, if so they go to the main ContentView, if not you go to LockedView. I am using the Purchases framework to manage in the In App Purchases.

@main
struct RugbyAppApp: App {
    @ObservedObject var userSettings = UserSettings.shared

    var swiftUISpeech = SwiftUISpeech()

    init(){
        Purchases.debugLogsEnabled = true
        Purchases.configure(withAPIKey: "UIGTHCnzIZUPvnxevAxUGTCchtpIpYZh")
        userSettings.checkSubscription()
    }

    var body: some Scene {
        WindowGroup {
            if(userSettings.license == true){
                ContentView().id(appState.gameID)
            }
            else{
                LockedView()
            }
        }
    }
}

Inside the initialiser I run userSettings.checkSubscription() which is this:

class UserSettings: ObservableObject {

    static let shared = UserSettings()

    @Published var license: Bool

    init() {
        //Other variables get initialised in here too
        self.license = false
    }

    func checkSubscription(){
        Purchases.shared.purchaserInfo { (info, error) in
            if info?.entitlements["subscribed"]?.isActive == true{
                self.license = true
            }
            else{
                self.license = false
            }
        }
    }
}

If the transaction is completed, and the Purchases frameworks receives the message saying everything has gone through I just update the license like this:

userSettings.license = true

I want the app to automatically refresh the screen when the license boolean (shown in the code above) gets updated. I thought using the @Published property wrapper would do this, but I am needing to restart the app in order to see the change take place. Any ideas?

I would not do this in the WindowGroup just have one View

Have a Bool that check if user has license then pass it to the that View which then decide which View to display

var body: some Scene {
        WindowGroup {
            ContentView(hasLicense: $hasLicense)
        }
    }

Then the ContentView checks to see a GameView or LockedView.

I am assuming that on LockedView you have a way that user can get a license then you change the @Binding var hasLicense to true to show the GameView

Hope that is clear