I have 9 of these qubino 240v flush shutter devices and this happens (stopping before reaching stop points and having to tweak parameters 76, 78 and 85) with two of them.
I can?t really work out why except one is a curtain and different motor, the other a blind but if shorter width which seems to create havoc with the power draw.
That is, the power to go down on the blind is ~9w, when it reaches the bottom stop, power goes to ~20w, and going up power is ~30w. It reaches the top stop and turns off automatically fine. The qubino seems to expect the power draw when in motion to be higher than when it reaches the stop point which causes the confusion and the blind stopping prematurely.