Axis direction inverted in Vertical but not in Forward

Hi, I have a problem with a tailsitter plane with 2 motor, non vectored.
The servo direction is correct during Horizontal flight but not during vertical flight, this cause a positive feedback and the plane is instable in vertical flight.
The orientation of the controller is correct, i checked with the HUD in Mission Planner.
the problem isn’t the radio axes, if i try to invert them there isn’t any effect to the problem.
the plane is of the same type of this: https://www.youtube.com/watch?v=YyyQwBDYNq8
I use the SpeedyBee F405 Wing Controller.
Thank you.