I was referring to this email.
Dear Cloud Drive customer,
On August 1, 2016, your Amazon Cloud Drive sync application (version 2.4.2 or earlier) will be deactivated and will no longer work. The Cloud Drive folder on your computer will still be there, but will not sync to your account. This change does not impact your Cloud Drive account or storage. We recommend safely uninstalling the application before this date to avoid interrupting your upload experience. Below are uninstall instructions.
Cloud Drive offers a new desktop uploader application, which you can get from
https://www.amazon.com/gp/drive/app-download.
If you also want a sync application, you can find third-party sync apps, like odrive or Cloud Sync by Synology, in our App Gallery
https://www.amazon.com/clouddrive/apps. These apps work in parallel with the new Cloud Drive desktop uploader.
Sync Application Uninstall Instructions:
Recommended option: Install and run the latest version of the new Cloud Drive desktop application from
https://www.amazon.com/gp/drive/app-download. Launch the desktop uploader to automatically uninstall the old sync application.
Manual option: Follow the step-by-step instructions in our Help Center:
https://www.amazon.com/syncapp-uninstall. If you are not comfortable with the manual instructions, please follow the recommended uninstall option.
To learn more about this change or contact Cloud Drive customer support, visit
https://www.amazon.com/syncapp-uninstall.
Thanks for using Cloud Drive.
I just knew it said something about syncing.