Call 1-888-653-7618 Dropbox Help Center to fix Dropbox not Synching Issue.
The 'local/online-only' settings are a reference to Smart sync, a function that facilitates hard disk space optimization.
The app is attempting to sync updates or files added by other users or changes you made to your files directly through the website if the sync status shows that it is downloading files.
Is it moving or does it appear to be stuck on the same amount of files?