Press Add Extension (pin. 2) and check Allow this extension to run in Private Windows (pin 3) if you want to run extension in incognito pages. Once done click on Okay (pin 4).
Find and click on the HideIPVPN icon (pin 5). Type in your VPN username (pin. 6) and VPN password (pin. 7).
You can find your VPN username and password under your VPN package in your Client Area, by going to Packages - click on your VPN package - on the next page find your VPN Username & Password. Click on Sign in (pin. 8).
2. Select a proxy server location and click on it (pin.9) to Enable the proxy. To disconnect the proxy server, press the “Disable HideIPVPN” (pin.10).
From the menu icon (pin. 11) choose Settings (pin 12).
You can change the port number to one of these numbers: 3129, 8080 or 80 (pin 13).Enable Prevent WebRTC leak option (14) to make sure your IP address is not leaked while using the HideIPVPN proxy servers.
It's as simple as that, no other configuration is needed.