My son installed the nest thermostat E in our home. I’ve installed the nest app on my I phone and trying to add the thermostat on the nest app I scanned the QR thing on the back of the device then it asks for a entry code. I get as far as it asking for an entry key I’ve gone to settings on the thermostat but all it says is “connected” and doesn’t give me a code. My son doesn’t remember the code and now I can’t add this device to my phone app. Any ideas on where to find this entry key. I’ve checked the box it came in with all the papers that came with it and no code. Please help this older lady with technology. Thank you
