Hi,
Although there is an OpenVPN addon in Issabel, the issue with VPN exceedes the module itself as many other aspects come into play when setting up/defining/configuring network services. If video tutorials and user posts/replies are not enough for you to get your issues fixed, and if you need it urgently for a secure call center that probably makes money, you might need to resort to paid support/consultancy. You can ask on the Telegram group where there are many independent professionals/consultants that might be willing to help you out remotely for a fee.
