I installed 64 bit Synergy 2.0 on a windows 10 laptop and on a Fedora 24 (KDE Desktop).  On the Laptop, Synergy started up, signed onto my online account got what it needed and is active and running.  On the Linux box, it started, signed onto my online account and then stalled.  There seems to be nothing I can do to kick it forward.  If you are looking to grab my key, how about allowing me to cut and paste it into the application?   Bruce