The device has already been added to another household.
If you are the Plant creator, please go to the Device interface and click on the Data Logger to unbind the Device. If you are not the Plant creator, please contact the Plant creator to unbind it.
If you don't know who the plant creator is, check through the picture route.
If the device belongs to you but you are unable to contact the creator or do not know who the creator is, please provide the device's serial number (SN) along with a photo taken on-site showing the SN, and submit a support ticket to the platform for assistance.