Download WireGuard for iOS from App Store.
Choose the preferred location and select generate a new key.
Now press the button to download .conf file or scan QR code.
Press plus button and choose "Create from file or archive", or "Create from QR code".
Now key will appear in WireGuard app and you can connect to our secure servers.
Don't connect to one key from multiple devices at the same time. The connection will be unstable and result in packet loss. Generate a key for every device that you will use.