Some people have reported if you load multiple tickets for different visits, the reservation system has a hard time selecting the tickets you're planning to use at the 7am BG drop. Shouldn't be an issue with 12pm BG drop, since you'd already have used one of your tickets with today's reservations.
They recommend unlinking future park tickets and only having your current tickets, so the reservation system has an easier time automatically selecting them for your 7am BG drop.
Since you did this with your daughter's phone, it should have worked at the 12pm BG drop if her phone had battery life.