This user account registration is not complete yet. The member needs to click on the unique registration completion link (sent to his email) and complete the registration by choosing a username and password.

You can go to the Tools Interface and generate another unique "Registration Completion" link then send the link to the user. Alternatively, you can use that link yourself and complete the registration on behalf of the user.

If you suspect that this user has lost interest in becoming a member then you can delete this member record.