I have had success getting the vehicle to takeoff by raising the altitude seetpoint in the local ned message
E.g
setpoint.z = -3;
then arm the vehicle.
It should shoot up like a rocket.
You won’t get to monitor the status unless you observe the position relative to the starting position
One more note, for effectiveness I would recommend resetting the setpoint target position to the current position similar to this
target.x = curren.x
target.y = current.y
target.z = current.z - desired_altitude