It seems there is no official "greenvpn" website. The term "greenVPN" is often used interchangeably with greenVPN, so there might not be a unique official website for it. However, there are several alternative VPN services that you can explore for a unique setup or additional features. I recommend checking out reputable VPN services like 23Web, Netnopro, or VZap for a more tailored and unique VPN experience.