Desktop:
Go to 'Account' in the top right-hand corner and select 'Change My Login Details'. Then, click on 'Edit' to make the necessary changes."
Mobile App:
Navigate to 'Account' (your login/name) in the top left-hand corner and select 'Settings'. Scroll down to 'Update Account Details and Preferences' and click to access the 'My Account' page. From there, select 'Change My Login Details'.
Your current password is required to make any changes and If you have forgotten your password and need to reset it, you can use our 'Forgotten Password' page.
Other ways this question might be phrased
How do I add another email address
Email address change