Why does a device suddenly disappear from the device list?

Dear user. Please check in the following ways:

1. The device may be reset by someone. When the smart device is reset by others and connected to the network, the device under the original account will automatically disappear.
2. If your device is a Zigbee device or a Bluetooth mesh device, when your gateway is reset, your sub-device will disappear from the App. Please check whether your gateway device is working normally.
3. After you entered the account, you selected the wrong family (devices cannot be displayed at the same time in different families).
4. You have logged in to the wrong account. Logging in to the App through a third-party login method is actually registering a new App account, so it cannot be bound to the account you registered with your phone number/email before. After logging in through a third-party method, you cannot inherit the equipment of the account you previously registered with your mobile phone number/email.

If the problem still exists after excluding the above situations, there should be a problem with the device firmware or device hardware. Please contact the device after-sales person for help.