What to do if the Mijia Smart Air Purifier with Humidification Pro shows offline in the Xiaomi Home App or cannot connect to the network after being powered off?

If the Mijia Smart Air Purifier with Humidification Pro shows offline in the Xiaomi Home App or cannot connect to the network after being powered off, please refer to the following troubleshooting steps:
1. Check whether the Mijia Smart Air Purifier with Humidification Pro is powered on and operating normally.
2. Ensure the Wi-Fi network can access the internet normally. Move the humidifier closer to the router to ensure a stable signal.
3. Unplug the power cord and reconnect the power after 10 seconds (the power supply requires some time to discharge).
4. Check whether other devices connected to the same Wi-Fi network can access the internet normally. If other devices also have network connection issues, restart the router and try again.
5. Check whether the Wi-Fi network name or password has been changed. If the Wi-Fi network information has changed, reconnect the device to the Wi-Fi network.
6. Check whether the Wi-Fi signal is affected by wireless interference. If necessary, move the device closer to the router and away from potential sources of interference, then try reconnecting.
7. Check whether the router has reached its maximum number of connected devices. Disconnect some inactive devices from the router and try reconnecting the device.
8. If the Mijia Smart Air Purifier with Humidification Pro remains offline or cannot reconnect to the network after the above checks, please contact your local after-sales service center for further assistance.