Hello wynand,
Thanks for reaching out to our community.
I understand that not being able to log in to your account can be frustrating. Let's see what's going on.
Please tell me which account you're trying to access: your Nest account or your Google account? The process for regaining access will depend on the account type as it's not possible for us to log you out manually from your devices. Remember, if you've migrated your Nest account, it will be associated with the same email address as your Google account.
Feel free to check out this article on How to Change or Reset your Nest Account password if you have a Nest account and this other one on How to recover your Google Account or Gmail if you're trying to recover a gmail account.
This will help you regain access to your smart home devices as soon as possible.
Please let me know how it goes.
Regards,
Angel.
