Good evening. I am the OP and have accidentally solved the problem. Here is my crude explanation. After I confirmed that the RC in fact linked to the Aircraft, I took another shot at activating the Aircraft. No problem with linking. I then tried one more time to complete the activation and when I reached the question whether or not to start in normal mode or beginners mode, I was halted by the message that I was not connected to Wi-Fi. For those that don't know the Phantom 3 4K, the RC does not connect to your phone or tablet with a cable but instead the RC connects to your device by generating it's own Wi-Fi signal, so you can go to your phone or tablet settings and connect to your device, just like you were connecting to the Wi-Fi at a friend's house or Coffee shop, etc. So, I shut down the Aircraft, then to my iPad and connected to my home Wi-Fi and then to DJI Go to shut it down just in time to see it say my Phantom was now activated. So, in other words, I should have disconnected the Wi-Fi from the RC and finished on my Internet connected home Wi-Fi. I had printed the appropriate pages from the DJI manual so I could follow the step by step instructions but they did not lead me where I needed to be. What a PITA this was. Maybe I can fly in the morning!