Touch screen not working

Hi !

I decided to make an astrobox touch using a Raspberry Pi 3B and the waveshare 7inch (B) display. The screen is displaying things but I can’t select anything…
The touchscreen is in the list of supported screen.

What can I do to make it work ?

Exactly which screen is it? Please provide a link

This one Pi 4/BB Black/PC/Various Systems

What do you see on the screen? This should work using the ‘hdmi’ version of the astrobox-config.conf

It showing me this but i can’t select any option.
I’m using the ‘hdmi’ version.

This looks ok. I think the problem is the calibration of your screen is off. You need to follow the instructions of the screen manufacturer to install the calibration app and calibrate it.