KVD21 no 802.11ax

I don’t recall any of my wireless routers showing me which 802.11__ standard they met.  It was on the packaging or the documentation.  Your gateway is 802.ax according to published specs.  Where in your setup did you see 802.11ac or 802.11n?

Your gateway has both 5 GHz and 2.4 GHz bands.  The default network automatically chooses which band to use for each of your devices, so you don’t need to do this.  (In my house, about 15 devices work just fine with the default automatic network.) In practice, many devices work better when they are connected to a dedicated 2.4 GHz network which you can set up.  But, it’s still working under the 802.ax standard.

There is nothing you can really do with 192.168.12.1.  They have really dumbed it down.  The app is only slightly better.  Hopefully you get to the point where you can “set it and forget it.”