Wemo emulation and motors with Alexa

I am using a Wemo emulator to control a motor to open and close blinds. I’ve tried a servo and a stepper motor and both have trouble when I turn them the amount I need, which is about 3 revolutions. With one revolution everything’s seems fine. When I go to two revolutions , Alexa says my device isn’t responding and then does another two revolutions after it has done the first two revolutions.

Attached is my sketch.

Echo_stepper102.ino (3.79 KB)