To update your login email you will need to visit the customer support team who will ask you the following security questions:
Your full name
Date of birth
For EU: The last 4 digits of the IBAN of your bank account
For UK: The last 4 digits of the account number of your bank account
Address and postcode
Your old (current) and new email
Once the details are validated your email address will be updated which comes into effect instantly 💪