Do you mean how to change your profile picture? Click on the three horizontal lines and go to the "Setting" tab under the "Bookmark" and above the "Logout" tabs. And if you mean adding a bio, go to your homepage, scroll down and you'll see a green (Edit) button.
if ur talking abt ur pfp, js click ur profile, go to settings and choose ur pfp!
thank you so much!!! i finally have a profile pictureee ヾ(☆▽☆)
thank you for helping meeee (=・ω・=)
Does anybody know how to update their profile in their account, or is it no longer possible? It feels so boring having no profilee(￣∇￣")