If you want to change the e-mail and/or password you use to log into the Cloud Control Panel, you will first need to go to My Account -> Your User Profile in the left-side menu of the Cloud Control Panel.

Once there, you will be able to change the First and Last Name on your profile and its Email Address - that's what you use as your login to the CCP.

To change your password, you need to go to My Account -> Change Password from the same left-side menu.

The next screen will give you options on changing your password, and a feature that will allow you to automatically generate a new, secure one.