I am trying to change my Nest app password. I have updated my phone number with my Google account, yet the Nest app is still sending the verification code to my old phone number. Now that I downloaded the Nest app on my new phone, I cannot use it to control my thermostat remotely. Is there no other way of updating account or change the password?
Sorry to hear about the troubles you're having, I know it can be confusing, but I'm happy to help.
Here are the steps to take to update the phone number on your Nest app.
Please let me know if you have any other questions.