If you have invited a Site Member to your family site and now want to invite him/her with the different email address, you should remove this member from the site and send an invitation to the site once again.
To do please take the following actions:
1. Log in to your family website.
2. Move your mouse over the ‘Home’ tab and select ‘Site members’.
3. On the ‘Site members’ page you will see the list of all current members or your family site. Click on the ‘More’ link next to the member that you would like to remove.
A small box will open with the option to remove that person from your family site. Click on ‘Remove from site’ in order to remove the member.
4. After doing the above, follow the regular procedure in order to invite members to your family website.
If you are not sure how to do this, you can find detailed instructions in the following link: How do I invite members to my family site?