I've been looking for account settings on Bitbucket for half an hour, maybe. It turned out, there is an extra hidden button below the one with a question mark. Why it's invisible? Because I haven't got an avatar and thus deserve this torture. No stroke, no a standard icon for that button. Such a shame for a designer who things a user always has an avatar. But even programmers messed up: when you sing with Google (what I always do), it returns a user's object with an avatar's URL. Was it so difficult to assign that URL to my account?