Its this one: https://a.aliexpress.com/_EwCyFX4 - the issue is that steering wheel buttons dont work, but also the default Android launcher has a special button where it goes into old Volkswagen native menu. But when I launch with Dudu, then the touch screen in the Volkswagen native UI does not work. So it seems that if I do not launch with the default launcher, the head unit does not establish any connection with the car: next/previous buttons do not do anything, touch screen events are not sent to native UI etc.
Is there any quick fix or it seems I am stuck with the default launcher for this head unit? From the Dudu menu I tried "Run default launcher at startup" option or whatever its called, but it had no effect.