My understanding on that is, if you are connecting directly to the powerwall on your own network, yes a windows laptop would work. The APP is iOS / Android however. So, you would be able to connect to your powerwall from your windows computer if you were on your own home network, or, if outside your network, had configured a remote access solution to a device on your network you could use as a jump PC to get to your powerwalls.
In order to be able to change settings on the Powerwall, you would need to run the iOS or Android app. I believe some people have been able to run the Android app on a Windows PC using an Android emulator. This would probably be your best bet if you don't have a supported device.