Just to make things easier:
UberEats: eats-jonathang5417ue
https://www.ubereats.com/ or use the app on your phone click on the profile symbol on the bottom right click on promotions (Under help) Enter in any promotion code (mine is : eats-gregoryy515ue)(just gregoryy515ue for uber rides) and click apply Enjoy your discount! also works with uber rides