Information!
VPN seems to be broken in version 4.2 so please upgrade to 4.3 before configuring VPN.
Step 1
Login on the QNAP web control panel.
Click on "App Center".
Step 2
Click on "All Apps".
Click on search field and enter "qvpn".
Click on "Install" QVPN Service.
Step 3
Click on "Open" or on the QVPN Service app on the desktop.
Step 4
Click on "VPN Client".
Step 5
Download and extract this zip file: https://ovpnstorage.privatevpn.com/PrivateVPN-TUN-CBC.zip
Step 6
Click on "Add" and then "OpenVPN".
Step 7
Select your VPN server configuration file from the folder where you extracted the zip file.
Click on "Open".
Step 8
On Username: Enter your PrivateVPN username
On Password: Enter your PrivateVPN password.
Tick both Use default gateway on remote network and Reconnect when the VPN connection is lost.
Click on "Apply".
Step 9
Click on "Connect".
Step 10
Enjoy your private Internet surf!