I can't get calls to work. Everything else is working, but when I receive a call, it doesn't show on my computer. At work, we use Cisco Jabber and I think it's somehow hijacked my contacts calling feature. When I try calling from the contacts app, it launched Jabber instead of just calling. I have deleted the Jabber address book plugin, and set Messages as the default IM application. I'm signed in with my iCloud on both devices and FaceTime. Anybody else using Jabber and know how to stop it from trying to be the default calling app? I haven't tried just deleting the whole app altogether, but might unless someone know a fix.
I had the same issue and finally got it working on my computer. From FaceTime, go to Preferences and on the Setting tab at the bottom where it says Default for Calls select FaceTime. This sounds like its going to make FaceTime open but once I changed this, when clicking Call Using iPhone on a number it calls with Continuity and does not open the FaceTime.