You have chosen for QlikView. QlikView offers you "pixel perfect design". In other words: You can decide where every object is precisely by the pixel.
Since you PC screen has a different format as your iPad, you will never have the perfect design.
The solution would be to start considering the switch to Qlik Sense. Qlik Sense automatically adjusts to screen size, even when rotating your iPad. Qlik offers the option to freely convert (part of) your license from QlikView to Qlik Sense and you can freely download the Qlik Sense desktop if you want to experiment with it first.