Hi Tony876,
Thanks for bringing this up here in the Google Nest Community. We're sorry for any trouble this may have caused you. This doesn’t happen normally, but let's look deeper into it. How many Nest Thermostat do you have?
Home/Away Assist. All of your Nest products can automatically change their behavior as people come and go. For example, it can turn on your Nest Cam to help you keep an eye on things when you leave home and turn it off when you’re home and don’t need it.
In addition to this, if you have a family member on the account, anyone that you've invited to share control of your home can also change the following settings:
Enable or disable your home from using phones' locations to help your home automatically switch.
Choose which devices can automatically switch as you come and go.
Enable or disable activity sensors for specific devices.
Changes made in any feature that uses presence sensing can affect other features that rely on presence sensing. For example, turning off presence sensing with Only Ring When Home can also affect Home/Away Assist, or if a home that uses Home & Away Routines turns off presence sensing for your phone, Only Ring When Home will no longer work.
Check these settings in the app to make sure they're set how you want. If something was changed, let other people who've been invited to your home know to leave the settings alone.
Keep us posted.
Best,
Renz
