Try a much simpler configuration. Use the DMZ option just to test and point that to your PC. That will in effect port forward all ports.
Next check the IP your router says is on its wan port and compare that to sites like whatsmyip. If the ip is not the same you will never be able to port forward because there is another nat router in the path.
Port forwarding is kinda tricky sometimes. It can be your machine is actually getting the data but not responding correctly. It can be the firewall but you have that disabled but it can be the program itself that is listening on the port. It the program does not respond the port will not be considered open. What you may want to do is actually block the port in the firewall...