Yup.
@Zach1 The registration process identifies people based on old residence card number and date of birth. To repeat, you need to register each family member separately with a different email address for each one.
Also: the date of birth is DD/MM/YYYY (if you’re using Google Chrome and translate, it may show up as mm/dd/yyyy, don’t be misled). The address to which the cards will be sent will be pre-filled to the address on the old card. If that was a lawyer’s address, ensure it is up to date or change it.