OK, thanks for the feedback. Good to know that Kobo's aware of it.
And I think I found what's not working. This morning, I installed the App on another Windows PC and all my annotations were synced on this 2nd PC. After that successful sync, I created a new annotation on my reader, synced but it didn't work. I uninstalled and reinstalled the Win app and it worked again. I had the new annotation. On the other side, annotations are still missing on my other laptop and in the Android app.
But I noticed the following sync sequences when I started the Win app for the 1st time (and after reinstall):
- Starting sync
- Updating books
- Updating annotations
- Loading dictionaries
- Downloading book covers
- Sync complete
All subsequent sync only have these sequences:
- Checking for updates
- Starting sync
- Loading dictionaries
- Sync complete
So after the initial sync, the apps do not update the books themselves, their annotations or their covers. I could not find a way to update the books separately. The issue is with the apps. However, the sync on the reader itself seems to work as the data is sent to the Kobo servers, the apps just don't read it.
As app sync don't read the data, it also doesn't send the annotations done on the app to the kobo server and therefore the reader doesn't get them during its "successful" sync.
Hope they will solve this.