Hi all, 
Thanks in advance for any help.

I have a double route set up- by this I mean I have my ISP's router/modem and then my own router plugged into that. 
ISP modem > Router > Server
I have set up static routes for my router and also my server, I have also set up port forwarding on both of them and tested this (the ports seem to be open) I have also placed the router in the ISP's DMZ. 


What am I missing?

If other players can connect to it (By other I mean players not from your LAN), then the setup is successfull and you just have to wait.