If you would like to edit your profile information, enter your profile, and select the "Change data" icon. 

Then the data fields can be modified. 

Fill in or modify the fields and click on the "Save" button. If you do not want to save the changes, select the "Cancel" button. 

Add custom data

Here you can add further data about yourself (for instance your interests, hobbies, etc.)

Add new personal data by filling in a field and click on the "Add custom data" button. To delete existing data, click on the trash icon next to the field that you would like to delete.  
 

Add or modify your email address

You can enter an email address in the same way as editing/adding information, the only difference is, that after you modify your email address, you have to confirm your email address. A red warning text will inform you about this. 

In order to confirm, you have to check your inbox, open the confirmation email, and confirm the modification. The confirmation email will arrive a few minutes after saving. (It is also possible that the confirmation email will be categorized as Spam, so if it does not arrive, please check your Spam folder!)

You can 'Resend' a confirmation email in the following cases: 

1) the letter had not arrived in your inbox 5 minutes after saving your email address;

2) the confirmation email has expired