Delivering expired goods on the online and bottles app

Delivering expired goods on the online and bottles app. I used the bottles app for the first time today. One of the items has already expired in June. I would like to know how is it possible that this item is still on the racks when picking of the list for the order? Or are they specifially looking for th eold stuff as it is not the first time it has happened - previously when ordering online I had the same issue. Not happy at all