Cordova-geofence-plugin not working

I’m working with Ionic2, Angular2 and Typescript in my project. When I install cordova-plugin-geofence (https://github.com/cowbell/cordova-plugin-geofence). Geofence is configured as follows:

App.ts

platform.ready().then(() => {

  if (window.geofence === undefined) {
    console.log('Geofence Plugin not found');
  }else{
    console.log('Geofence plugin found');
    window.geofence.initialize();
    const geofence = this.geofenceService.create({
      longitude: -8.404015,
      latitude:  43.339147,
    });

  this.geofenceService.addOrUpdate(geofence).then(function () {
      console.log('Geofence successfully added');
  }, function (reason) {
      console.log('Adding geofence failed', reason);
      });
    }
  });

HomePage.ts

window.geofence.onTransitionReceived = function (geofences) {
  geofences.forEach(function (geo) {
    console.log('Geofence transition detected', geo);
  });
}

The service geofence.service.ts it was configured as tsubik’s ionic2 geofence example: https://github.com/tsubik/ionic2-geofence/blob/master/app/services/geofence-service.ts

No errors appear on console in all geofence configuration process but method window.geofence.onTransitionReceived() not log anything when geofence transitions happen.

What’s wrong? Thanks!