Hi managers, I had this problem last week. I posted this problem couple days ago and knew that was issue of facebook instead of Top 11 technical problem. Then I started to think why, then, I noticed that I was using CHINESE NAME in my Facebook and I was guessing the link doesn't support other language, so I change my name in Facebook into ENGLISH, after that, couple hours later, I re-existed in my friends' list again and I started to receive gifts and my friend vice versa. Thus, see if your name is not in ENGLISH, I suggest you change it. I'm not technical guy, that was really a wild guess and finally it worked for me.