My cable modem was reset by the cable company on a service call. Since then my remote Maestro (500 miles away) will not log in and shows UDP failures among other things. Trying to reinstall remote smart SDR with no luck? Worked great for months before that. 6300 and Maestro, Rev 2.1.32
Jack, as has been mentioned above, if your ISP changed/reset your router, then I suspect that the port forwarding configuration, either manually of by UPnP will need to be reconfigured. If you were using uPnP and this is on by default in the router, then rebooting the radio should dynamically open the ports. There is also the possibility that there is an IP issue if your radio was using a statically assigned IP address. The key takeaway here is that you are going to need access to the radio and it's network either physically or remotely.