Octoprint & VPN on same Raspberry Pi

So I managed to get octoprint by flashing my SD card with octoPi working on my Pi 3 and all is good. Next step was to allow monitoring externally from my local network and I was trying to set my Pi up as a VPN server as well using the bash URL here found here http://www.pivpn.io

I seemed to have installed it all correctly and when I try to run the sudo for the VPN (command is "sudo piVPN") on my Terminal (ssh via Mac) I get an error come up "command not found".

Tried to run a few other commands for the VPN and all coming up with the same error.

Has anyone got a VPN server successfully set up on the Pi that also has OctoPi flashed?

If so, can you please reach out and touch base to see where I've gone wrong?

EDIT: Just tried re-installing and got to the installation page again where it told me to type a couple commands to check it out and add profiles (the step that i want) and i get this error message after i reboot pi: http://imgur.com/a/NXtez