If the Desktop program doesn't work, you have the Web and the terminal command alternatives.

Tested already on Jessie and Stretch version of Debian, include the Chrome extension.
References:
Topic: Visit to download the sync application for Debian.
Web: https://mega.nz

More Cloud Storage guides are available.
Guides:
DrBd
Gogle Drive
Hubic
OneDrive
Guide: "Share system directories across the network"

Security notes (pending)
References:
Module 7: Security first
