I had already followed that guide but it does not work for me. I will try that configuration on Ubuntu, maybe the problem is on Fedora but i doubt it.
It will be awesome if @Tux0ne could share the logs of the successful connection with:
journalctl -u NetworkManager.service
and the VPN configuration file that he can find it in the folder:
/etc/NetworkManager/system-connections
Here is my connection file if someone can spot any problems:
https://pastebin.com/Pn6cM0Ng