In reply to Alkis:
I've just tried ticking Prefect Day in the app and it's appeared instantly in my UKC logbook. That's the first time I've ever logged something directly into the app.
I only got the app about 18 months ago. Then, after that, decided to tick off everything I've ever done in the UKC logbooks. They all then automatically appeared in the app.
But the process of anything I added to UKC automatically appearing in the app too stopped happening a couple of weeks ago.
Perhaps from now on I need to just log stuff in the app that is in the app, and log stuff on UKC that isn't. But that wasn't the case just a couple of weeks ago!
Edited to add final paragraph
Post edited at 20:44