After the router was installed and you did a hard restore of the slingbox, did you or they configure the router to port forward correctly to the slingbox? During the slingbox setup process, did you choose fully automatic port forwarding rather than manual port forwarding? Do any remote viewing warning signs come up on your slingbox when you go to
and sign into your account?
If you do get a remote viewing warning sign, then my guess is it has to be a router port forwarding issue. Some routers don't do UPNP and if you tried the setup using automatic port forwarding, I'm wondering if that's the reason for the remote viewing problem. You'll need to access your router, open port 5001, re-run the sling setup, choose manual port forwarding and add your ip address into the manual network setup. If you've done all that and you are still getting a remote connection issue, then I'm sort of stumped.