To do this, go to "More" in the app’s navigation bar and there to the "My Profile & Settings" area ("More" menu at the top next to your profile image) - Settings. There you can view and edit your details, such as address, travel preferences and communication settings. To make changes to your "Personal information," go to the top right of the "Personal information" screen and click on the "Edit" button. You will be re-directed to www.miles-and-more.com and can change your personal details directly.
For other settings, please do this online at www.miles-and-more.com