Download openconnect GUI for Windows on this website https://github.com/openconnect/openconnect-gui/releases
Open the downloaded file and start to install it.
After you installed, click on finish to load openconnect app.
Add a VPN profile and put gateway address from servers we listed in our website, for example, we will put https://us1.freevpn724.com
Click on 'save and connect' button, if it is first time you connect, it maybe ask to confirm the certificate, so click on 'Accurate information'
Put the VPN username.
Put the VPN password.
Enjoy the free VPN services.