Dropbox and File Manager

Hello guys, I have a problem with File Manager and its dropbox functions.

I went to Settings>General>Cloud>Cloud Accounts>Dropbox and ticked the File Manager options and even rebooted the device, why cannot I see any options to send to Dropbox on File Manager whenever I choose "share" . Since all the options are checked,why shouldn't it appear on the "share" option on File Manager?

Thanks