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.
As long as you have added the device in Meross app, switch User->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.