The Dual-Path Communication Failure - Broadband trouble condition indicates the panel is unable to communicate with Alarm.com through the broadband network.
There are several possible reasons the broadband communication is not connected to Alarm.com:
The router is not connected to the internet or is not receiving power.
For panels with built-in Wi-Fi communication, the panel cannot connect to the router
For panels that use a bridge for broadband connection, ensure the bridge is powered up and is connected to the router with an Ethernet cable.
If the panel allows for a static IP, make sure the values entered are correct.
To disable Wi-Fi at the panel, navigate to:Settings > Advanced Settings > Enter Installer or Dealer Code > Wi-Fi > Deselct the Activate Wi-Fi checkbox.
You may want to select the network the panel is connected to first and forget the network before disabling Wi-Fi
Enable Wi-Fi and reconnect the the desired network
Test for resolution
2GIG GC3
Reboot the Router then follow the steps to connect to Wi-Fi from the panel