You can only change your data in the "My Account" category when you are logged in.
At the top right (right along the shopping cart), click on 'Profile'. You will be taken to the page where you can log in with your email address and password. You will then automatically access your data. The data is divided into several parts:
- Log in details
- Personal details
- Delivery address
Are these incorrect? You can click "Modify" under each part of the data. In this way you adjust the data step by step. When you have changed your details, do not forget to click "Modify my details" at the bottom. Only when you do this will your new data be saved.