Please note: if you have invited a family member to join your site as a site member, but this person doesn't have a card in the family tree, you will first have to create a person card in the tree and associate this person to the person card. Only then you will be able to upload their DNA data.
Please read the following FAQ to learn how to associate your site members to the family tree: How do I associate a site member to the family tree on my site?
As a family site member, you can only upload and see your own DNA file. You will also be able to see if there is a file that has already been uploaded by the site webmaster to your profile.