The fastest way round this having experienced it myself is to uninstall Tether then re-install it, it then offers you the password option again. As said above it's a good idea to change the password...

@GeorKhawam Sorry I'm late back on this. Reading it now you appear to want to only allow one specific device to interact with the main network not all? All I can suggest and it's not something I...

@Marvin_S Again thank you for the help. I can't understand why the VR2100 offered me the upgrade tbh, I was on the UK site as far as I know, it worked fine anyway in router mode anyway, it also...

@terziyski Thank you for that info very helpful.

@Jammers Hi, You can't really tell until you get the dreaded won't connect on 3 but will on 2, this as I said earlier is normally printers, tv's & consoles, in addition to that an older tablet, phone...

@Jammers Things like printers, gaming consoles and smart TV's can't use WPA3 in general so either put them on the guest network and keep that network on WPA2 with a hefty password or try the 2/3 mix...