If you're experiencing issues with your Zigbee bulb going offline, please follow the steps below: ①　Hub Offline If you see an orange alert indicating that your hub is offline, please power cycle the hub and wait for it to reconnect. If it does not reconnect, delete the hub from your app and then reset it. Once the hub is successfully reset, set it up again. ②　Signal Attenuation If the issue persists, signal attenuation due to obstacles between the light and the hub could be causing the problem. Consider adjusting the placement of the hub to shorten the distance between the lamp and the hub. ③　Bulb Offline If you see an orange alert indicating that your bulb is offline, power cycle the bulb and wait for it to reconnect. If it does not reconnect, delete the bulb from your hub and then reset it. After successfully resetting the bulb, set it up again. Following these steps should help resolve the disconnection issues. If you require further assistance, feel free to contact us.