Creative Cloud Desktop app

File Sync Links that may help... all the links I have, since I don't know the cause of your specific problem
-FAQ https://community.adobe.com/t5/Get-Started/Helpful-Links-FAQ-Where-can-I-find-links-about-managing-and/td-p/7570118
-http://helpx.adobe.com/creative-cloud/help/sync-settings.html
-http://helpx.adobe.com/creative-cloud/kb/arent-my-files-syncing.html
-sync and email link https://community.adobe.com/t5/Get-Started/Email-link-of-file-in-personal-CC-folder/td-p/5944719
-an overview of assets https://assets.adobe.com/files
-File sharing https://community.adobe.com/t5/Get-Started/Does-Creative-Cloud-support-sharing-videos/td-p/7113392