Hyperpixel4, touch problems on top part of display


I’m facing some problems with a new Hyperpixel4 touch:
the touch screen shows everything good but the touch is not working on the top part of display and if I rotate also the blind spot rotates!

I have tested with a fresh install of Rasbian Buster and Stretch and both on Rpi3 and Rpi4 with identical results.

Any ideas why?