Many low‑budget or “free” VPN providers use this model to attract users while limiting full access to those who promote the service or acquire codes through referrals.
If this is similar to other “code‑based VPN” portals: cgvpninfo link enter code exclusive
: Upon entering a valid code, the system generates a temporary configuration file or deep link that automatically applies the settings to the user's VPN client. Many low‑budget or “free” VPN providers use this