Sorely disappointed. Made an order on here using a discount code. App refused to put my order through but wpuldn't say why. After a bit of tinkering worked out it was because my bank needed confirmation the order was legit so confirmed and went back to Uber app to confirm sale. It had remembered everything but the discount code and I didn't realise until after. Nothing I can do to retrospectively add discount and can't get a refund as it's for groceries. Will never use this app again.