Hi
It's starting to look that way (immobiliser/key... some authentication thing...) - though I tried both keys I have - and they work fully with all boot / lock unlock etc via remote.
Regarding the ignition switch; it stopped working on the old one - I replaced it and the problem persisteted so I suspect that it's not really to do with the ignition switch (I unplugged it fully yesterday and there are 0 lights / obd screen when it's unplugged)
Picture shows what I get when I have the key in position II, where you would normally see all the warning lights etc. The airbag light does actually show up and then turn off after 2 or 3 seconds.
I did the cluster test and all lights are working on it.