Choose SSH when your app expects classic credentials and manual transport fields. It is the most familiar option for older tunnel-style clients, but it also asks the user to enter more values by hand.

Choose VLESS when your app supports VLESS or Xray imports. The panel can generate TLS and Non-TLS links, so this is usually the easiest option when you want a ready-made share link instead of a manual profile.

Choose Hysteria only if your client clearly states that it supports it. The panel may provide both a main link and legacy-form data, so the safest approach is to import the main generated link first and only fall back when your client requires another format.

Choose WireGuard when your device can scan a QR code or import a config file. It is usually the smoothest option for users who do not want to type keys or tunnel settings manually.

Choose OpenVPN when your app works best with .ovpn profiles. The panel gives you a downloadable file and the credentials needed if the client prompts for them after import.

Start with the protocol that your client supports natively. If your app imports VLESS links, VLESS is often simplest. If it imports WireGuard configs or QR codes, WireGuard is often the most straightforward. If it only supports .ovpn, use OpenVPN. The client decides the best choice more than the server does.