You can modify any of your personal details by going to the My Account section, remember that to enter this section you must first log in with your user.
Once in My Account, you can perform the necessary modifications.
Do not worry, recovering your password is quite easy. Go to Log in and press Recover password, it will ask you for your email, please confirm that you are inserting the correct one and that is basically it, we will send you an email with the new password.