Nighthawk R7000P and Starlink

I had a similar problem, took all day to fix it.  I recently installed a Starlink gen 2 (rectangular antenna) with the ethernet adapter.  I bought a R7000 at Best Buy.  I tried installation from scratch several times but I became stuck.   I was able to access the router configuration at 192.168.1.1 from my browser, but I had no internet connection.  I read all the Starlink messages in this forum, but everyone seemed stuck.    I tried setting up a static route, I tried various combinations of IP address and gateway, no luck.  I finally called the customer support phone number after 5pm my time.  The first thing the rep did was ask me to go to the command line and type ipconfig.  I clicked on the start button, typed "cmd" in empty space, then run as administrator, and typed in ipconfig.  I hadn't used that command in a long time but I immediately knew what was wrong.  My gateway was 192.168.1.254 but the router was 192.168.1.1. 

The rep didn't need to say anything more.  I went into the control panel, Network and sharing center, then "change adapter settings."  I double-clicked on the active Ethernet item and opened properties, then "Internet Protocol Version 4".  I had originally hard-coded my IP address and gateway, and I could have just changed the gateway IP address, but I took the easy way and clicked the button for "Obtain an IP address automatically".  This lets the router's DHCP do all the work.  I clicked OK enough times to get out and rebooted the machine.  Voila!  I had internet.   The next couple of hours was spent changing everything on my network to DHCP or at least to a gateway of 192.168.1.1.

I left a good review for the rep.