[«SmG» Cloud]

We are trying to get our MC server registered on gametracker but for some reason I keep getting this error.

What I have tried:
Obviously port forwarding
DMZ Host
Port Triggering
Enabling ipv6
Port forwarding rules
all firewalls off/restarting pc/network
whitelisted IPs through DNS server
routed around DNS server
tried different ports

Possibly could be the server mods?


For some reason port 25566 doesn't want to open correctly. Never had problems with Halo doing this. Hopefully this weekend I will have more time to figure it out. But I figured I would post maybe someone here can help or make suggestions?