jessmurdock wroteI am able to connect to Server via OpenVPN inside the LAN.
at least you know openvpn is setup ok.
jessmurdock wroteI am unable to connect to Server via OpenVPN outside LAN (WAN).
Have you enabled port forwarding of UPD port 1194 on your router.
jessmurdock wroteWhich IP should this be?
Server Public IP?
Server public IP is what you need.