I bought an FPV drone and got it yesterday. After finally getting the firmware update to work after 3 hours, I decided to try the flight simulator so I could get the feel of things. The flight simulator seems to see the goggles just fine, but it will not connect to the controller. It gives me an error message about the controller and the goggles possibly not being connected. So I try to google how to connect the goggles with the controller. The only things I find are things about how to connect the controller to the drone. I can’t use the simulator unless I can get the controller to work.

Can anyone help me?

You'll get an appropriate response by posting this query in the FPV Series section of the forum.   We discuss the Spark drone here.