When you get a new router, you would want to reset and reconfigure your Slingbox to get the new IP address of the router. Once you reset the Slingbox, you will use the website setup.slingbox.com to set up the Slingbox again. The article below should help you further.
Hope this helps!
I recently upgraded my cable modum and I am now unable to connect with my Slingbox. The error message says....
"There's a problem communicating with your Slingbox. Make sure that the Network and Power lights are on, your router is set up correctly, and there are no firewalls blocking access.
It seems to me that I need to recofigure my router, but I don't know how. Any help is appreciated.