You can troubleshoot the following:
·If you paired the device with Home app,please add it again by Meross app.
·Check whether your home Wi-Fi is connected to the internet or not.
·Make sure the password of your home Wi-Fi hasn't been changed.
·Make sure your device is covered by your home Wi-Fi.Moving it closer to Wi-Fi router or install a Wi-Fi range extender would help.
·If all else fails,please factory reset your device and try to add it again.
Visit Account->Amazon Alexa or Google Assistant page within Meross app for pairing instructions.
You can tap "Don't Have a Code or Can't Scan" and input the setup code manually.
Hold the power button for 5 seconds, it will reset and enter Wi-Fi configuration mode.
Factory reset will erase all of your custom settings, and you'll have to set it up again.