This is a highly advanced and utterly confusing interface for managing your Epicloot account. If you get lost, blame the engineers.
Go here for settings that are actually useful
And here for the 1000s of notifications you've ignored
Change your password, because security is important, we guess
Change your username, but let's be real, you're stuck with this one
Upload a new avatar, but only if you have 4GB of free storage space