My existing thermostats and camera cannot link up or sync to my new phone. Google nest keeps kicking

[Clieder32]

Why won't Google nest allow my new phone to link into my existing account to control my three thermostats and one camera ?

[MplsCustomer]

@Clieder32 

When you get a new phone and log into the Google Nest app with the same username and password you were using to access the app on the old phone, it should simply log you in, with access to all of the same devices.

What is happening when you try to log into the Google Nest app on your new phone? If you're getting a username or password error, the most likely reason is that you are inadvertently not using the same username and password you were using to log into the Google Nest app on your old phone.

(I'm just another Google Nest customer.)