When logged in click the ‘Gear’ icon in the upper right corner and after the menu drops down hit ‘Profile’.
Change your e-mail address:
Choose the ‘E-mail’ input (while in the ‘Details’ tab) and correct or enter a new e-mail address. Don’t forget to click on the ‘Save changes’ button at the bottom of the page.
Change your password:
Choose the ‘Password’ tab, enter your current and new passwords, and don't forget to save the changes by clicking ‘Change password’