Help installing PiVPN.

Hey, so I have recently installed PiVPN again on my rpi running the latest DietPi build.
Everything works fine (as far as I can tell). However, it doesn’t open the corresponding port and allow me to connect to my server. Ive tried doing it through UFW however nothing seems to work.
Ive been at this for a few hours now and cannot get my head around it.
Any ideas that could give me some sort of lead on how to solve this issue?

have you port forwarded UDP/1194 thru your firewall/router to your dietpi VPN IP address?