[SOLVED] Can't "Engaged" Arduino

[faak]

Hi,
thank you very much for this project.

I have Raspberry 4 Model B 4GB with OpenPlotter and pypilot installed.
I have bought a motor controller from the pypilot store
https://pypilot.org/store/index.php?rt=p...uct_id=124
(2021 model)

I’ve been reading the workbook
https://github.com/pypilot/workbook/wiki
 
I follow this part:
https://github.com/pypilot/workbook/wiki...Controller
I have connected the motor controller (4 pin)  to the GPIO.
I gave 12 v to the motor controller and a red light show up.
There is also a yellow light when I started openplotter.
I'm at home so there is not a rudder connected to the motor controller.

I can’t “Engaged” Arduino on the autopilot window.

I’m not a tech person and I try my best to find a solution, but I have no idea “where” to look at.
I have some experience with linux command line.
Can somebody provide me any advice?
Please tell me if you need some more information.

Thank you very much
Franco