I have iPhone X with latest OS update, and Mac running latest Catalina, sync via Dropbox.
I have almost 30 folders/notebooks on the make with over 3,700 notes.
Sync status on Mac says that folders have been created. When I open Joplin on the iPhone there is just 1 folder containing all 3,700+ notes and none of the folders(notebooks) that are present on the Mac. Looking on dropbox is not informative to me as the names of the files in apps/Joplin are not meaningful.
So, how do I get the folders to appear on the iPhone?
Sorry to have been a nuisance. Revisiting the app on the Mac it now shows as sync completed. iPhone is now in the process of fetching the 3000+ notes, all the folders are there, and resources are still being fetched (at 12,000 so far).