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Next, to restart Dropbox, type “Dropbox” in the textbox which says “Type here to search” in the bottom-left side of the screen. Click on “Dropbox App” from the list of displayed options. Wait for Dropbox to start and indicate that it is finished syncing.
If your files still don’t sync, logout of Dropbox and then log back in. Logout by clicking Preferences (which is almost immediate appears above the Quit option highlighted in the previous screenshot) and then follow the steps illustrated below.
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If your files still don’t sync, consult Dropbox Storage Optimization to ensure that it’s configured to sync the intended files.
Finally, if need be, contact Dropbox’s support.
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