When signing into the Insteon app, you may occasionally encounter an alert informing you that the app was unable to establish a connection to the Insteon Hub. There are several reasons why this may occur.
Your home's internet connection is offline
Your home's internet router or modem is not functioning properly
Insteon Hub may have become unplugged from ethernet or power
Basic Troubleshooting
Ensure that your Insteon Hub is connected to a working power outlet and that the ethernet cable is firmly seated. It may be helpful to unplug and reinsert the ethernet cable. If your Hub shows a solid red status LED, your Hub is unable to connect to the internet.
Confirm that your internet router and cable or DSL modem are connected to power and turned on. Learn how to Identify your router and cable or DSL modem.
Check that your internet connection is working by attempting to browse to a website using another device or computer in your home.
Try restarting your Insteon Hub by unplugging its power cord. Wait about 30 seconds and then reconnect your Hub to power.
Try restarting your router and cable or DSL modem.
If your hub is connected to your network via a network switch, try power cycling the network switch.
If none of the above steps resolved your issue, follow the steps outlined in this article to perform a network reset.
If you are still unable to connect to your Insteon Hub after following the above steps, contact Insteon Support and reference this article.