Configuration of motion detector with HMIP-SPDR directional detection

Hello again colleagues.
Please help me with the configuration of a motion sensor with HMIP-SPDR direction detection. After many attempts I have come to the following:
1. if one person enters e.g. the kitchen, the bulb lights up and on leaving it goes out. And this is ok.
2. if e.g. my wife enters it lights up, then I enter it continues to light, but when I leave it already turns off the lighting and my wife is already sitting in the dark .
There is a "Difference of passages left" or right in the sensor options but that doesn't work for me somehow.
Does anyone know how to configure this sensor?
Greetings.

Maybe a bad detector? Maybe it knows when someone enters and doesn't count the other person, but when someone leaves it switches off. I have an ordinary detector and it works fine. When it detects movement, the light switches on if nothing happens for a minute, even a small movement of the hand switches on the light and in the kitchen the light is constantly moving.

Added after 38 [seconds]: .

I only had the problem of choosing a spot so she wouldn't see someone walk in front of the door but it worked out.

From what I have checked it counts fine, one way and the other. Surely the reason is at the moment a bad configuration. I will look further on the German forums for what they write.
And one more question. For example, the HMIP-BDT switch can be inserted instead of a normal switch. And how about the buttons for it and the housing? Can you buy them somewhere or are there any universal ones that will fit?