Anyone using one signal on IOS?

Ionic Framework ionic-v3
1

I got alert 1 and 2…but not coming to 3…
and also, I can’t see my device on dashboard / users added on iOS

I don’t think I did wrong with code…

ionViewDidLoad(){
    alert("loaded");
    if(this.platform.is("ios")){
      

              alert("1")
              
              
              var iosSettings = {};
              iosSettings["kOSSettingsKeyAutoPrompt"] = true;
              iosSettings["kOSSettingsKeyInAppLaunchURL"] = false;
              
      alert("2")
              // Initialize
              window["plugins"].OneSignal
              .startInit("app key on one signal dashboard")
              .iOSSettings(iosSettings) // only needed if added Optional OneSignal code for iOS above
              .endInit();
              
      alert("3")
          
          }
  }