If you use the UpVPN app it configures DNS=1.1.1.1 and not configurable yet.
However, when you use Web Devices, a configuration file or QR code is generated with DNS=1.1.1.1 but you can change it before using.
However, when you use Web Devices, a configuration file or QR code is generated with DNS=1.1.1.1 but you can change it before using.