In order to update your Account credentials, Email and Password, click on your name on the top right corner of the account home page. There, click on Settings and then find the "Security" tab, to access this information.
You can get to the home page coming from anywhere in the app, just clicking on Slidebean's logo on the upper left corner of the screen. This will take you to the Dashboard, where you can access the settings.
If you can't get your password right in order to log in, the "Forgot password?" option is available within the sign-in page at all times.