I tried to update my previous version of Domoticz by installing version v4.0.10717-8 (no Python) on top of it. This caused all kinds of problems which I could not solve so I decided to go for a complete clean/new installation.
Looking at his screenshot, he have a z-stick gen5 as a controller. So this looks to be the usual problem with these PIRs when you include them unplugging the stick (this controller have a battery to allow standalone inclusions close to devices), using it's button.
Thanx for your reaction LouiS22.
I forgot to mention this but I included/excluded the devices several times. The result is always the same: the devices are not recognised.
Regards, Emiel