First Alert ZSMOKE unit - Ring compatabile?

Hello, I have couple of questions about smoke detectors -1 - The Ring smoke/co listener cannot listen to the builder installed smoke/co detectors. When I make it listen to my nest protect, it works like a charm. Is the listener only compatable with certain smoke detectors (sounds) ? I have interconnected smoke detectors and the listener would have been a perfect solution. I tried configuring multiple times but no luck, I just went ahead and bought multiple First Alert ZCOMBO units.2 - Is there a way to silence the alarm in the ZCOMBO unit from the app? I did not see any easy way to test the detector and get notification in the app. The TEST button does not trigger any push notification.3 - Is the First Alert ZSMOKE unit compatabile with the ring system? In couple of places, I need a smoke detector but do not need CO. Or can I just configure the ZCOMBO unit, I notice it adds 2 devices into the app. 1 for Smoke and 1 for CO. Can I just remove the CO device from the app? The goal here is that in these couple places, I want the ring system to activate the siren and notify emergency contacts on smoke detection only. I do not want the system to trigger the alarm on CO detection.Thanks