Sync works but there is a blank spot on the Gnome status pop up at the lower left of the screen.
This is a fresh install of Fedora 24 but reusing the /home partition from Fedora 23 under which the GUI displayed fine.
sni-qt is installed.
I tried uninstalling insync, deleting ~/.config/Insync, reinstalling: no change.
tagging our engineer @lpugoy 
@andmalc: It works in my test on a fresh Fedora 24 install. What package did you install? If you click on the blank spot does the app window show?
@lpugoy I installed the default rpm from your website - insync-1.3.8.36087-fc21.x86_64.rpm.
I notice that only Chrome and Chrome Apps have icons on that mini-menu. No other apps including Gnome apps show icons though I don’t know if they should.
Yes, the GUI does come up if I click on the blank spot. I thought I tried that before and got no response but is coming up consistently now even after a reboot. So, I can live with this. Thanks.