Family share isn't working - we set it up and it was working fine for a few weeks then in the last few days it's stopped, we can't see the other members in our family share and it says we aren't set up but it doesn't allow us to confirm and reset up

Help! We set up family share a few weeks ago, and it was working fine with the organizer and two additional members. The three of us could see each other on app and iTunes stores and could view each other's purchased items. Then ... All of that disappeared. We cant see each other's profiles any more and we definitely can't view any purchased items. In addition, when we try to go in and jump start by downloading a free app or logging out and back of itunes, nothing works. It seems to show we have family sharing in the iCloud settings, and when we click the Apple ID it asks us to confirm, and we confirm, and are asked if we want to change accounts because then we trigger the 90 day freeze period. And we aren't changing any accounts - just trying to confirm the same accounts to get family share to work! We are all on the same ios 8.1.3 and os, so I don't know what else to try!