Rachio Generation 3 can not be added to app

Just purchased a Rachio generation 3 and was able to connect it to the internet using the Mac method. It has an assigned ip address however, when I try to add the controller to the app, the app says it can not find it. Yes, they are both connected to the same network and have rebooted the Rachio, the router, and even the phone several times. Any ideas?
Thanks Geoffrey

Geoffrey, when you stand at the Rachio with your phone how many bars of Wifi are showing up?