It is a 32G card, so space enough. As said, if there are serious issues I'd like to use the GUI for editting and vieuwing files.

Yes I made a completely clean set-up. Nothing else is there, only Domoticz. Initially I also tried to install Grafana, but I left that path for now so made a new clean ...

This is due to your shutdown and cold start see wiki https://www.domoticz.com/wiki/Troublesh ... _cold_boot

Next the the given solution the other solution is to not shutdown your Pi.... :)

ah, that's the trick most likely. Been focussing too much on the offline message, hadn't realized it only ...

I also used the guide from Domoticz, which isn't much different

I use buster-lite, with GUI, although after initialisation the pi is mounted in a headless box and I use SSH to connect to it. The GUI is just easy when troubleshooting and editing files


Now the very odd thing is that I had it ...

I'm in the construction/set-up fase, so it doesn't have to run all the time just yet

I follewed the instructions here

https://krijnermerins.nl/domoticz/domoticz-installeren/

(in Dutch, but just follow command sequence)

I did a re-install. Yes, I know to leave bullseye alone, there are many issues with that release.
I did a new install and this is the result from a status request ...

I installed Domoticz on a pi 4B and Buster OS
Domoticz stopped all the time

After I did a chown pi.pi on the files in the Domoticz directory (as suggested in the troubleshooting guide) I could start Domoticz with

sudo ./Domoticz

and the website and dashboard appeared
So far so good

Then I ...