When i try to install the openhab cloud connecter service in paper UI. It hangs.
After a while if i restart the page it says installed but, i cant find it under Configuration / services.
Also have an apt installation, the UUID en Secret ar not to be found under /var/lib/openhab2/
Please open a new topic with more details about your system and what you tried.
Posting to a 2 year old topic is not a good idea, as it is unlikely that you have exactly the same issue.