Alexa Routine not firing with Stick Up Cam Motion

I've recently added a Stick Up Cam to my Ring Family of camera to replace a Wyze cam. I did this because I was interested in using it with Alexa Routines and my smart lighting.I've set up the camera and its working great, Alexa notified me that it had found the camera and added it to my available devices.I've gone into routines and set up "when stick up cam sees motion, turn on the light" ... I also added "send me a notification" just to make sure it was working. But the stick up cam doesn't appear to be communicating with Alexa that motion has happened.I use a similar routine for the doorbell which works perfectly ... someone presses the bell and the hallway light comes on.Have I dont something wrong? I've tried different variations and I can't get it to work at all. Any advice would be appreciated!