Do you have this device plugged next in line to your Cable/Internet Modem or is it plugged into a switch first? Do you have a static I.P. with your account or do you know if your ISP provides you with everthing via DHCP? Have you checked that in your status page you have a Wide Area Network gateway?
Can you plug into the modem directly and then in a command line issue: or if you want to more easily copy the results to here use
to pipe the results into a notepad file. Alternatively if you are using Linux use
ipconfig /all > c:\my_ip.txt