Background info: Ressie for me at POP under my account. Ressie for Brother, SIL, Niece & Nephew at AOA under SIL's account. 2 accounts linked under Friends & Family, SIL made ADR's 2 months ago and I can see those fine. Today is our 60 day mark. On the computer at midnight to book Fastpass, it looked like I was booking Fastpass for just SIL and I, fast forward to this morning and it actually booked for me, brother, SIL and Niece. Nephew has disappeared from their reservation and was replaced by me. So the system showed me on 2 reservations with 2 sets of tickets, nephew was nowhere to be found and unable to book fastpass for him. After a long call with Disney, got it fixed. Any idea of where I went wrong?