If 0 zones are recognized during onboarding....
1) Ensure your common wires are plugged in to the Common wire terminals. You can learn more about the different wire connector terminals here.
2) Ensure your zones are properly connected to the wire connectors and not jammed into the white release buttons above:
3) If your common wires are properly connected as are your zone wires, check to make sure that all the wires are snug and do not come out when pulled. Just a soft tug is fine, no need to swing from the wires to make sure they don’t come out ;)
4) If all zones are still not being recognized, go ahead and try to re-onboard your device and reference How to Troubleshoot Onboarding.