Check the guide
The opening section explains whether the device supports an app, WireGuard, OpenVPN or router routing.
Each device has its own setup page. Choose the exact device rather than following a generic network-device guide.
These devices do not share one universal VPN process. Some import WireGuard directly, some use OpenVPN, and others must be assigned to a configured router. Each guide states the supported route before asking you to change anything.
The opening section explains whether the device supports an app, WireGuard, OpenVPN or router routing.
When manual setup is needed, make a separate named profile for that device in the Dashboard.
For router-based setup, assign only the intended device unless the entire network should use the tunnel.