As an Athlete, tap on the profile icon in the top-left corner of the homepage, then tap Account Settings. To change your email, tap Edit Profile and edit your email address. To change your password, tap Change Password.
As a Coach, tap the menu icon in the top-left corner of the Roster screen. Tap Change Email or Change Password.
If you change your password, you will be logged out and will need to log in again with your new password.