Install the official WireGuard app, import your connection, and turn the tunnel on. Use the guide for your device below.
Keep the connection private.
Your file and QR code contain connection secrets. Do not post or send them to anyone.
For a phone, show the QR code on another screen. The QR code is available from the connection screen.
The connection page being ready means setup finished. It does not prove that the tunnel carries traffic.
Check the tunnel
After you turn it on, look for an active tunnel and a recent handshake or data transfer counter in WireGuard. Open a known website or service. If it does not work, turn the tunnel off and on once, then check that you imported the matching file or QR code.