If you have changed a Xiaomi account, you need to rebind with the device.
To unbind with the device, please refer to the following methods:
1. Press and hold the device on the Mi Home APP’s home interface >> tap [More] >> select [Delete device] or tap the device you want to delete >> tap the three-dot icon at the upper right corner >> enter the device settings and tap [Delete device] to unbind;
2. Delete the device through the camera settings.