[Gracus]

So something goes wrong:
Multiples fresh install of kodi

No, that is perfectly fine. In that dialog you can manually add the artwork you need.
There currently is no way to do that automatically, besides Emby

If at least it was working...

Here the current situation (movie set show clearlogo from first movie):



Then I open the dialog and there is no option for clearlogo:



So I try manually, it ask me for picture name:



Then I choose the picture and ended up with this:



I said myself it was good this time but still no luck and still showing clearlogo of the first movie: