To update your account information in the Kickbase app, navigate to the side menu by tapping the icon in the top left corner of the Base. Select 'Settings' and then 'Your Account'. Here, you will find the 'Edit' option in the top right corner. Once you tap on it, you will enter the edit mode, where you can change your username, email address, password, and profile picture. Don't forget to save your changes by tapping the green 'Save' button in the top right corner.