I have started having problems sharing to Facebook with my KindleFire. When the share option was first available, I could share with no problem. Now, when I share highlighted items to facebook, they are not posting onto my facebook account. When I attempt to share, just below, on the shared notes & quotes page, I can see what I have attempted to share, but it says that the user is "Unknown". I have tried turning my KindleFire off,and restarting, but it does not help. When I had this problem the first time, I disconnected my Kindlefire from my facebook account, and then reconnected it. When I did this, it worked. But now its doing it again, and disconnecting and reconnecting does not work. This is getting very frustrating. How can this be fixed?