Another issue with DoorDash and GrubHub is that I am supposed to tip BEFORE delivery. I do that but most of the time my orders get delivered to a wrong building

Another issue with DoorDash and GrubHub is that I am supposed to tip BEFORE delivery. I do that but most of the time my orders get delivered to a wrong building because drivers don't seem to read my delivery instructions. I wish I could tip them directly after the delivery, but I am concerned that no one would pick up my order if I set the tip to $0 in the app.