Install OpenVPN Connect
Download the macOS installer. Open the .dmg file and move OpenVPN Connect to Applications.
Download OpenVPN Connect for macOSOPENVPN SETUP
Install OpenVPN on macOS
Set up OpenVPN Connect on your Mac in three steps.
Import your VPN file
Open OpenVPN Connect. Choose Add Profile, then File, and select your .ovpn file. You can also drag the file into the app. Confirm the import.
Connect
Select your profile and click Connect. Enter your VPNNu username and password if asked, then allow macOS to add the VPN configuration.