Many thanks for the usergide and quick explanation! Now it is much more clear. Probably I need to look for another router with VPN client preinstalled. Router NX510v is indeed strange, why does it...

@Sunshine Hello, many thanks for the reply! Indeed, I got it from ISP. But it was emphasized, that the device is not bound to any ISP and can work with any possible SIM card and network. Could you...

Hello, Please help to configure traffic through VPN for all connected devices to my TP-Link NX510v 5G Wifi 6 Telephony Router. How to setup the settings for VPN to work? I do guess, that I need to...