Other question for you, what is your WD router plugged into? What’s the make and model of the modem? And is this modem in fact a modem+router so in fact that the Tablo is behind 2 routers from the external Internet.
I contacted my ISP and requested that they verify their router at my home was set to bridging. It wasn’t… They configured their router properly and now the Tablo is working in the UPnP mode (all Green), and no port forwarding required. When I installed the N900 about a year ago I asked that they disable the WiFi and set their router to function as a terminating modem (bridging mode). Didn’t happen.
I guess there was a missed communication between my ISP support and myself…
Good to hear you figured it out. You were behind 2 routers that’s why it wasn’t working. All modems should be in bridge mode when a router is connected to them.