Windows Server 2019 VPN Issue

Hi Team, I'm having issues trying to set up VPN service on server 2019.
I've followed this link as a guide just to simply setup vpn connection so that we can access out the network from outside 

https://www.youtube.com/watch?v=dNBCTLMXVOQ

From the dashboard, everything looks ok 

Upon connecting from the windows 10 machine, this is what I get 

Hoping if someone can assist me with this issue. My only aim here is just to create a simple VPN connection from the server 2019 role