Ring doorbell 2 never worked from install

I installed my video 2 along with my horn alarm. And not once has my phone rang to say something is at the door! Instead my Alexa devices adviced someone is at the door and my home ring alarm will play the doorbell. But not once has it shown on my phone saying someone is there etc not once! Yet it shows to be set up correctly. Where or what I’ve done wrong is a baffle . If anyone could help I’d be much appreciative thank you