All z-wave devices unreachable

Could you give us some more info?:
- What kind of Z-Stick? (Gen 2 or Gen 5?) How old is it?
- How is it connected to the Mac? (Directly to an USB port or with an USB Hub?)
- What kind of Mac?
- What kind OS?

Enclosed a sample of our Mac mini energy settings with 10.10.5.
It never ever sleepzzzz

Here is a bit more information

zstick 5
through a hub
mac mini 2018 base model latest os

Thanks for your information.
- What kind of HUB (brand/type) do you use? Is it powered?
- Is the Z-Wave stick directly plugged into to the HUB?

Amazon Basics 10 port USB 2.0 Hub https://www.amazon.ca/AmazonBasics-Port-USB-2-0-Hub/dp/B00GGYU46O
Powered.
The z-wave stick is directly connected to it.

Is it possible to connect the Z-stick directly to one of the USB ports of the Mac mini?
(to test if this kind of HUB perhaps gives the problems)

Right now, I don't have a spare port. I know that I had problems with the PLM when connected through a hub. I'll try figure out a way to put it directly on the mini.