Couple of days ago, when I launched a game on my Iphone once again, all list of my "TOP11-Friends" was empty.
And before that there were 85 people!!

I did not delete them one by one, and suppose it is hard to beleive that all of them suddenly deleted me as their connect...

Same time I still see their games, receive news concerning their transfers!

I even still getting gifts from them each day, but dont see the list of senders those gifts...

Switching off and them turning on the mobile does not help.
Same picture of empty list of friends.

When I tried to Add a friend (a specific Manager, whose game I visited) - game shots down by writing "Internet connection is lost". It happened for several times!

Did someone faced same problem and how it was fixed (if)?

P.S. I play without entering with a Facebook profile. From the very beginning (May 2014)