I understand that Deco app is the main (and only) option for managing the network, but that doesn't mean that the Web UI should be almost useless

I second this, it's a security concern to not add this feature to Deco routers yet

@DecoUser123 After selecting "WiFi network and backhaul", did you also set up a password & security for that 6Ghz network? Full instructions here: How to Use the 6 GHz Band of Your Deco WiFi 6E...

@Tonmeister You need to set up connection preference on your Deco: How to select a preferred signal source on the Deco App (part 1)

@pibew84514 You don't need "reasons" to go from M4 to XE75. Do it if possible

@tc323 That looks like either a custom firmware or a very old one. If it is a custom firmware, contact your ISP