Not playable at no additional cost

I'm from the app more than disappointed. In the trial daughter has a milkshake done, which unfortunately could not be "delivered", because the matching straw was not unlocked. She fusses three weeks until their pocket money was enough to buy the package with said straw. Then the bitter disappointment: It is not, as with virtually all previously purchased apps from us, the entire contents unlocked (for € 3.85 !!!) but only individual parts. The one it still does not allow to fulfill the task of the trial .... If you want to play anything, you have to pay at least 15 €.
We definitely do not!