The problem with Duolingo is that not everyone sees the same, even under iOS. When Hearts came in, it was immediate on my Wife's account. But I didn't see them

The problem with Duolingo is that not everyone sees the same, even under iOS. When Hearts came in, it was immediate on my Wife's account. But I didn't see them for 6+ months. We both regularly update apps too. It is a very strange thing.