OK got it !!! It was a combination of more failures - with the main one not having read the name of the status message carefully enough : ItemStateChanged(!!!)Event. So as long as battery level is the same ...

I also use the lookup in PaperUI to be sure but it looks like you have added the thing in PaperUI from the inbox. What I would do is delete from PaperUI both nodes. If it is as you say setup in the .things files correctly you will not be able to delete it from PaperUI it will report a problem with any things that are setup in the manual things files.