I have had similar situation. try this:
use Application # and UCI #, that way you don't have to put in last name.
put in passport information and not the city which the applicant was born.
when it comes to where they will be living, put in the information of where you are currently living. if different from the time of your application, try using what you put in the application.
and finally for the family size, you should put in # of family member (yourself, your spouse, children) + applicant + any dependent of applicant
also, I am not sure, but you might have to include your spouse's parents if they are living with you and they are shown on your application as your dependent.
I believe the # of family member comes from the financial evaluation form.
Good luck!