I don't often reference AO on my phone, but had this same problem a couple days ago. After the menu disappeared a couple times, I was finally able to make my choice very quickly, but it was not easy to use.
Emily in Central WA
Mom to 4 boys (16yo, 15yo, 13yo, 8yo) and 2 little girls (10yo, 6yo)
AO Years 11, 10, 8, 5, 3 and 1
Mom to 4 boys (16yo, 15yo, 13yo, 8yo) and 2 little girls (10yo, 6yo)
AO Years 11, 10, 8, 5, 3 and 1