In the My Settings section of your account, click on the Personal tab. Next, click on the Personal Information subtab. Fill in any of the available fields to complete your personal information profile. Your first name and last name are intentionally read-only (to update your name or email address, please submit a ticket to Qlik Support through the Qlik Support Portal) However, your alias or screen name can be updated under Personal | Username
More Help Available on the Help page