Synergy on Pi3 + ubuntu-mate xenial - autostart, copy/paste problems

I have just started using Synergy with my Pi3 (ubuntu-mate xenial). I have it running as the client on Pi3 and server on my ubuntu xenial laptop. 2 questions I’d be grateful of some help with please:

  1. I have added synergy into auto-start up box in settings on the pi3 but it doesn’t autostart!
  2. copy and paste between machines doesn’t work even though I have the settings ticked in synergy

All help gratefully received.