App works fine if order is accepted and restaurant can fulfill the order, when the restaurant can't then it's complete rubbish. Restaurant asked if I wanted to cancel - "yes", 5 minutes later I have 5 calls and a text from the Just Eat driver asking me to cancel the order - the App by that point has no option to do so and a message saying that if I cancel it, it is likely I will be charged the full amount. Eventually it seems the restaurant manages to cancel, hope I get my money refunded!