Thanks for visiting the Community. I'm sorry for the delayed response. Let's sort this out. May I know if you saw it in the Nest app or the Google Home app? Do you have more than one home structure? Also, what Nest devices are added in your account?
Looking forward to your response.
Thanks for clarifying that. Let's have a better look — give these steps a try:
Let me know how it goes.
I understand where you're coming from. Usually, the home structure in your Nest app is different in the Google Home app but technically they're the same home structure if both apps show your Nest devices. Changing your home structure name in the Google Home app is the best thing you can do to avoid confusion. If you feel your account is compromised you can change your Nest account password and set up your 2-step verification.
Check out these guides:
Give us a shout if you have any questions.