Hi all, I used to use back to my mac frequently when my computers were on mavericks. After updating to Yosemite, it stopped working, but after playing around with it for a while, toggling it on and off, re-signing into icloud, etc., it started working again for a couple months. Now for the past few months it hasn't worked at all. Occasionally on startup I will be able to see my computers in the sidebar, but they disappear after about 5 minutes. I've tried signing out and back in to icloud again, turning it on and off, and i've checked all the screen sharing settings. I haven't changed any of the screen sharing settings since it was working, and chrome remote desktop works fine. I have 5 computers and it doesn't work on any of them anymore. Am I the only one experiencing this? Thanks for the help in advance.