When it isn't syncing, are you certain that Dropbox is running?

If it is running it should have an icon in the Menu bar (looks like a box with all of the top flaps open). If it isn't running, open Finder and click on the Finder's Go menu in the menu bar and then click Applications. When the applications folder opens, find and start Dropbox. (An easier way to do that is to use Spotlight Search via Command spacebar shortcut or via the magnifying glass icon in the menu bar and then tap dropbox into the search window).

Once you have Dropbox running, click on the Dropbox icon in the menu bar, then click the gear-shaped icon, then Preferences, then General in the bar at the top of the Preferences window and put a checkmark in from of 'Start Dropbox at system startup.' If you do that, it should always be running and should sync automatically.

Apr 15, 2016 8:57 AM

• Get many necessary shipping supplies right at your nearest UPS Drop Box. Declare a value for packages to a maximum value of US$500 per package. Drop off packages up to a maximum size of 16in. Note: High value and hazardous material shipment restrictions apply. All UPS service levels are accepted at UPS Drop Box locations.
• Open your Dropbox folder. To find it, click the Finder icon in the Dock (a smiling blue and gray Mac logo), then click Dropbox in the left panel. This folder is like your Dropbox “home,” meaning that anything you add to this folder will be synced to your Dropbox account so you can access them from anywhere.

How To Get Dropbox Back In Finder

Open Finder on your Mac Click on the drive that contains your installed files Open the ‘Users’ folder and navigate to the folder with your username You will find the Dropbox folder in there.