Can't get device token iOS, Push Notifications

Hi,

First of all, I followed this steps push notifications. You can see the configuration here. Then, I am following all this steps device token but I can't get the device token at all. I am testing on iPhone 6+. I am using this command below to run the app in my device.

appc run -p ios -T device  -C <DEVICE_UDID> [-V "<DEVELOPER_CERTIFICATE_NAME>"  -P <PROVISIONING_PROFILE_UUID>]

This is the code that I am using to test.

Ti.include("util/functions.js");
 
var deviceToken = null;
log("deviceToken: " + deviceToken); 
log("removeDeviceToken: " + Titanium.Network.remoteDeviceUUID); 
// Check if the device is running iOS 8 or later
if (Ti.Platform.name == "iPhone OS" && parseInt(Ti.Platform.version.split(".")[0]) >= 8) {
 
    // Wait for user settings to be registered before registering for push notifications
    Ti.App.iOS.addEventListener('usernotificationsettings', function registerForPush() {
        log("register for pushing");
        // Remove event listener once registered for push notifications
        Ti.App.iOS.removeEventListener('usernotificationsettings', registerForPush); 
 
        Ti.Network.registerForPushNotifications({
            success: deviceTokenSuccess,
            error: deviceTokenError,
            callback: receivePush
        });
    });
 
    log("Register notification types to use");
    // Register notification types to use
    Ti.App.iOS.registerUserNotificationSettings({
        types: [
            Ti.App.iOS.USER_NOTIFICATION_TYPE_ALERT,
            Ti.App.iOS.USER_NOTIFICATION_TYPE_SOUND,
            Ti.App.iOS.USER_NOTIFICATION_TYPE_BADGE
        ]
    });
}
 
// Process incoming push notifications
function receivePush(e) {
    log('Received push: ' + JSON.stringify(e));
}
// Save the device token for subsequent API calls
function deviceTokenSuccess(e) {
    log("deviceTokenSuccess");
        deviceToken = e.deviceToken;
}
function deviceTokenError(e) {
    log('Failed to register for push notifications! ' + e.error);
}

Finally, here is the log when I run in my iPhone 6+

[INFO]  deviceToken: null
[INFO]  removeDeviceToken: undefined
[INFO]  Register notification types to use
[INFO]  register for pushing

Anyone has some idea what I am doing wrong or missing. I've been looking for some mistake for a long time but I didn't find.

General Information

Operating System
  Name                        = Mac OS X
  Version                     = 10.10.4
  Architecture                = 64bit
  # CPUs                      = 4
  Memory                      = 8589934592
 
Node.js
  Node.js Version             = 0.10.37
  npm Version                 = 2.7.5
 
Titanium CLI
  CLI Version                 = 4.0.1
 
Titanium SDK
  SDK Version                 = 4.1.0.GA
  Target Platform             = iphone