Thanks for posting. I'm sorry to hear about the situation you are experiencing while trying to add your Nest Learning Thermostat 3rd Gen to your app. I understand that you already checked that your app is updated. But don't worry; help is here. In this case, I just need to confirm: What app are you using to set up your device? To control the Nest Learning Thermostat, you need to set up the device on the Nest App. For detailed information about the setup process, see the "How to set up your Nest thermostat (3rd gen or earlier) and Nest Thermostat E" article. Please let me know if you have more questions.
