I wanted to update this thread. I'm happy to say my controller, Spark, and Go 4 app. are all working together now. However, I can't say what changed to allow this to happen. I was having to go threw several steps to get all three working together each time I flew. Then one day I started the controller and drone, connected my phone and GO 4 came up with the connection own it's own. Happy to report several flights later the trio is still working together as they should. Thanks to all of you who tried to help me with this problem.