What if I have keyed in a wrong email address? July 07, 2022 08:01 Updated Please make sure you have a valid email address set in your account details. Related articles What should I do if there is a discrepancy (i.e. missing or wrong items delivered) in my order? I would like to know more about the NS55 package. What does the standard McDonald’s® party package include? Can I contact McDonald’s® to change the email address for my account? I am having issues registering. Why is this so?