fyi: Together with @dilisi we identified a problem that sensor things (e.g. HT) stay in status UNKNOWN after a OH restart when a thing was added manually in PaperUI or defined in a .things file.
details: https://github.com/openhab/openhab-addons/issues/6707
Update 12/30:
Done
@dilisi confirmed that the problem is solved with the DEV build, also verified with password protected devices
Updated DEV build: https://github.com/markus7017/myfiles/blob/master/org.openhab.binding.shelly-2.5.0-SNAPSHOT.jar?raw=true