Check the underside of the camera base or the side of the camera housing. How to Add a Device to XMEye Using the Serial Number
If you see this error, it means the serial number is already associated with another user's account. You may need to click "Forget Device" on the original app or reset the DVR to factory settings. xmeye serial number full
If you have local access to the network but not the device physically: Check the underside of the camera base or