Can't change router ip.
This router is an industrial waste. I can't change the lan GW. This is a joke?
If you are in reference to your DHCP Server IP Address range, you can. Using the AmpliFi smartphone app (available for iOS and Android), select the image of the router to open the main settings. Next, scroll down under "Advanced" and select DHCP server. Here you can edit the range of IPs for your DHCP server.
Hope this can offer some help to you.
Don’t forget to press the check mark in the upper right of the app screen after making changes in order to confirm them