FirebaseCloudMessagingを使い、iosのプッシュ通知を実装させたい

前提・実現したいこと

FirebaseCloudMessagingを使い、ionicでiosのプッシュ通知を実装させたいのですが、うまくいかず悩んでいます。
テスト端末にプッシュ通知送信許可のメッセージは届くので「許可」するのですが
、その後通知を送っても受信できません。
実装手順は下記の記事を参考に、ほぼ同じ手順で進めていました。
https://qiita.com/kokogento/items/c3390f16895a76dbde70
現在エラーが出ておらず、どこが間違っているのか全く分からない状態です。
「どこを確認すべきなのか」だけでも教えていただきたいと思っております。
AppDelegate.Swiftのソースも載せておきますのでご確認いただけると幸いです。
初心者で分からないことが多く、足りない情報が多々あるかもしれませんが、その際はお申し付けいただけると幸いです。

Xcode、Firebaseの設定

FirebaseにAPNs認証キーアップロード済み

Xcode側でプッシュ通知許可済み

該当のソースコード

AppDelegate.Swift

import UIKit
import Capacitor
import Firebase

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, UNUserNotificationCenterDelegate, MessagingDelegate {

  var window: UIWindow?


  func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    FirebaseApp.configure()

    if #available(iOS 10.0, *) {
           // For iOS 10 display notification (sent via APNS)
           UNUserNotificationCenter.current().delegate = self

           let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
           UNUserNotificationCenter.current().requestAuthorization(
               options: authOptions,
               completionHandler: {_, _ in })
       } else {
           let settings: UIUserNotificationSettings =
               UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
           application.registerUserNotificationSettings(settings)
       }

       application.registerForRemoteNotifications()

    return true
  }

  func applicationWillResignActive(_ application: UIApplication) {
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
  }

  func applicationDidEnterBackground(_ application: UIApplication) {
    // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
    // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
  }

  func applicationWillEnterForeground(_ application: UIApplication) {
    // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
  }

  func applicationDidBecomeActive(_ application: UIApplication) {
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
  }

  func applicationWillTerminate(_ application: UIApplication) {
    // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
  }

  func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
    // Called when the app was launched with a url. Feel free to add additional processing here,
    // but if you want the App API to support tracking app url opens, make sure to keep this call
    return CAPBridge.handleOpenUrl(url, options)
  }

  func application(_ application: UIApplication, continue userActivity: NSUserActivity, restorationHandler: @escaping ([UIUserActivityRestoring]?) -> Void) -> Bool {
    // Called when the app was launched with an activity, including Universal Links.
    // Feel free to add additional processing here, but if you want the App API to support
    // tracking app url opens, make sure to keep this call
    return CAPBridge.handleContinueActivity(userActivity, restorationHandler)
  }

  override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
    super.touchesBegan(touches, with: event)

    let statusBarRect = UIApplication.shared.statusBarFrame
    guard let touchPoint = event?.allTouches?.first?.location(in: self.window) else { return }

    if statusBarRect.contains(touchPoint) {
      NotificationCenter.default.post(CAPBridge.statusBarTappedNotification)
    }
  }

  #if USE_PUSH

  func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
     Messaging.messaging().apnsToken = deviceToken
        InstanceID.instanceID().instanceID { (result, error) in
            if let error = error {
                NotificationCenter.default.post(name: Notification.Name(CAPNotifications.DidFailToRegisterForRemoteNotificationsWithError.name()), object: error)
            } else if let result = result {
                NotificationCenter.default.post(name: Notification.Name(CAPNotifications.DidRegisterForRemoteNotificationsWithDeviceToken.name()), object: result.token)
            }
        }
  }

  func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
    NotificationCenter.default.post(name: Notification.Name(CAPNotifications.DidFailToRegisterForRemoteNotificationsWithError.name()), object: error)
  }

#endif

}