How to implement Mobile Deep Links with BitlySDK iOS

I'm having a hard time with the implementation of BitlySDK for iOS 18 for the POC (don't have published app yet, currently only on TestFlight).

I have followed the documentation from Bitly (which seems to be deprecated and lacking info in general about mobile deep links):

• I've setup the mobile app in Bitly dashboard, as well as custom domain.
• I've added the same domain to Associated Domains in my project.
• I created a new shorten link using the Custom domain, and set my destination link to https://test.com/?page=testing

Expected behavior

• clicking on a link opens up the app, we receive the destination link from the deep link, we redirect the user appropriately

Actual behavior:

• clicking on a link opens up the app, we do not receive BitlyResponse at all - no destination link nor any link, and we cannot redirect the user appropriately

Am I missing some part of configuration or doing something wrong?

AppDelegate.swift:

import Foundation
import BitlySDK

class AppDelegate: NSObject, UIApplicationDelegate {
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil) -> Bool {
        Bitly.initialize("BITLY_APP_ID", supportedDomains:["CUSTOM_DOMAIN"], supportedSchemes: [""]) { response, error in
            // response provides a BitlyResponse object which contains the full URL information
            // response includes a status code
            // error provides any errors in retrieving information about the URL
            // Your custom logic goes here...
            if let deepLink = response?.url {
                print("✅ Received deep link: \(deepLink)")
                               
                if let url = URL(string: deepLink) {
                    DeepLinkManager.shared.handle(url: url)
                }
            } else {
                DispatchQueue.main.async {
                    DeepLinkManager.shared.page = "Response not called"
                }
            }
        }
        
        return true
    }
    

    func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void) -> Bool {
        return Bitly.handle(userActivity)
    }
    

    func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
        return Bitly.handleOpen(url)
    }
}

Thanks to Fatima's comment, I'm closing the question with the solution:

Instead of using these functions in AppDelegate (as instructed in BitlySDK):

application(_:continue:restorationHandler:)
application(_:open:options:)

Use view modifiers to receive NSUserActivity and URLs:

onContinueUserActivity(_:perform:)
onOpenURL(perform:)