Not sure I understand the Q? the contra-rotation is for the yaw axis to stop the tello from spinning, the 4 gyro's are still active,,,,, which we need for rudder control.
I have used .kml logging files to access/extract data from flight logs. This is what you are using here, but I'm not clear from the 'theme park ride' what you can see in terms of data?
I would be able to see available gps sats, airspeed, altitude, signal strength etc by mouse hovering the ride...
I also remembered having to set the server as Mainland China, this vid is correct but I had to do the setup many times before I succeeded,. My post of frustration is in here!! so keep at it,,,,,
I think you may have missed the first step, which is to name the Tello in the software with a password, then enter this in the step where you connected to local wifi. and keep us posted,,,,,
It's been quite a journey for me trying to understand the process but it connects every time now. Use the Xiaomi 2 repeater, it boosts the iPhone Pad wifi signal.
So it plugs into a remote battery USB port, and latches the Tello with its connection, giving enhanced results in terms of range...
Good to see you in here! it's a great platform / entry drone, use an extender/repeater for better range and vid quality,,, get some extra packs from Laptops direct, like half price!,,,