If you've been using your shifter for a while but all of a sudden the motor stops working it could mean that the DC motor has shorted out or there is a blown component on the motor controller. Often this happens due to current spikes caused by pulling the motor against some mechanical stop (like a limit screw).
There are protections in the circuit to keep current spikes from causing these issues however sometimes parts wear out prematurely. In either case you can send the shifter back to our shop for service - we will disassemble the shifter, test the components inside and replace or fix what broke.
If you have never configured your shifter and you're not seeing any movement during your first configuration try to hit the double-arrow buttons in the New Configuration page until the position indicator on the app shows at least 200. You will hear the motor move each time you press the double-arrow button and increase the value.