You can update your avatar, name, mobile number, country, language, height, and year of birth.
To do so, please go to Settings > General > Profile by clicking on the = (hamburger) icon on the top left corner (top right corner for Arabic) on the Home page. The only information that you cannot update is your email account on your own as it is the main identifier for your Elfie account. To update your personal email. Please contact our support.