I connected a new phone to Windows with a USB cable, created a new note and a new task, and ran the first sync.
The note did sync OK, but the task doesn't show up in the Windows application.
I found nothing obvious in the Settings, either in the Android app (4.10) or the Windows app (2.3).
Any idea?
Thank you.

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Edit: I don't know what I did, but Tasks now sync.