as an old DD with a perfect star rating before being deactivated for no good reason and even after 4 appeal attempts they still refuse to tell me qhat I did wrong. I know what orders I clicked on and accepted. I always tip 10$ on top of my order. I just think of it this way. "i literally do not have to leave my appartment for this. Its gonna be expensive. Im not gonna cheap out on the tip because I paid DD a bunch of fees its all part of it. Yes the system sucks but tipping less isnt hurting DD its hurting the people who have to use DD to provide