AmpliFi's web interface can be used on MacOS and Windows to perform initial configuration of the network and manage advanced options. See how to perform initial setup on the web interface in the AmpliFi User Guide, Chapter 4: Installing Without the App. The AmpliFi Router is meant to be managed from a smart phone or tablet.
To access AmpliFi's web interface you must be connected to the AmpliFi network on your device. Open a web browser and in the URL type in either http://amplifi.lan/ or the router IP address. (To obtain the router IP address look for the screen below on your AmpliFi router by tapping on the LCD screen)
Important This screen shows the router IP address