If you're talking about T11 2015, then this is a bug which has been discussed in other threads, as I have the same problem on mine (iPad) where only my 20 Facebook T11 playing friends are showing. Yet I can see all of my friends in fixtures. On my iPhone which runs the old T11 I see the full 91 friends.
FC Loella. Server 121. Level 17
11 League Titles
2 Champions Leagues