Personal details
In case you didn’t complete your personal details or you want to add/modify any details, you can simply go to the profile page by clicking on the circle icon that besides your name at the top of the page (Figure 1) then click on "Personal Data"(Figure 2).
(Figure 1)
(Figure 2)
Then simply complete/edit your personal details then click on "Update details" (Figure 3).
(Figure 3)