ThermoWorks App: "Device Already Registered to Another Account"

Summary: For security reasons, ThermoWorks devices can only be claimed by one account at a time. If you receive an error stating the device is already registered, it must be removed from the previous account before it can be added to a new one.

Scenario 1: You have access to the old account

This often happens if you are switching email addresses or previously set up the device on a family member's phone. To fix this immediately:

1. Log Out of your current (new) account.
2. Log In to the original account where the device is currently active.
3. Navigate to the Device Settings page for that specific thermometer.
4. Select Remove Device.
5. Log back into your new account and re-add the device.

Scenario 2: You bought the device used (or lost access)

If you purchased the device second-hand, or if it was gifted to you and you cannot contact the original owner, we need to manually release the device from the previous account.

Scenario 3: Anonymous / Guest Accounts

Did you previously use the app as an Anonymous User?

If you added the device on an Anonymous account, and then later uninstalled and reinstalled the app without logging out, the device may still be "stuck" to that temporary anonymous account.