Bought a brand new USB2 hub and everything is ok now. Thanks for your magnificent solution.

Hi,

I bought a raspberry pi 4 because nr 1 died. I'v added a z-wave stick and want to add devices. After the include command, my pi is searching and I can't abort that process. It don't detect any devices. I've already disabled the bluetooth. Do you know how to solve this issue?

Regards, Joost