Follow these steps to troubleshoot: 1. Ensure the device is powered on and check if the working light is functioning normally. 2. Verify that the 4G network connection is stable. 3. If the camera is in an area with a poor 4G signal, relocate it to a spot with better signal reception. 4. Delete the camera from your UBox account, and re-add it. Ensure the app is updated to the latest version.