Yes, the Lyric T5 Wi-Fi thermostat can be powered by a Honeywell WireSaver module.
If the thermostat displays a strike-through Wi-Fi icon on its screen or shows up as offline on the Lyric app, it has lost connection to the network. Make sure the router is powered and broadcasting. The home's Wi-Fi network may need to be reset by power cycling the router. Consult the router's instruction manual for directions on power cycling. When the network has been restored, the thermostat will automatically reconnect. An activation email hasn’t been received. An email will be sent from connected-Home@alarmnet.com.
Press and hold the 'Menu' key for five seconds, and 'ISU' will populate. Then press the 'Select' button.