(1) The device is not powered on or not turned on, you can check the corresponding switch status through the card platform to determine
(2) There is a problem with the card. The flow is not available, resulting in the inability to activate
(3) The wrong number of devices, not our platform domain name, IP or port problems, this situation can send query parameters instructions to query.
(4) Not positioned state, you can move the device from indoor to outdoor. If it is already outdoors, shake the device to make it repositioned.