Compatibility check says compatible but not in setup app

[Kevin802]

I bought a Nest Thermostat E.  The compatibility checker said it was compatible with my system.  While installing with the Nest app, it indicates the thermostat is not compatible with my system.

[David_K]

Hi @Kevin802 I moved your reply to another topic into it's own topic so we can support you best.

Please can you share a photo or link to a photo of your existing wiring setup?