Ah. I have now ferreted out the place where such an image might appear - but is not visible on the codeacademy top page as presented to me. Quite possibly this is due to my use of various privacy supportive software (as plugins) in the browser (Firefox here). Ordinarily that collateral-blocking software filters pop-ups and other advertising material, but it is quite possible that it is not sophisticated enough to decide otherwise on the image that you expect to be presented in that section of the page's header area.
If I move into that rectangle and then also left click in that (blank for me) area though, I do see the pull down menu with the "My Account" and other three items.
Might be interesting to decipher what's going on with all that, but for the moment I suppose it's worth your knowing that that intended image is invisible to me (and therefore I suspect to many others who use similar anti-intrusion plug-ins in their browsers).
More ordinary usage I think is that there be a link at the bottom of the page - ordinarily with a text string to manifest it, which allows a user access to their account settings.
That might be worth considering, in addition to the usage scheme I now see has been chosen.
I know it's not easy to support the panoply of browsers (and system platforms upon which they run) - especially nowadays, when people are pressed to deal with the vast number of exploits and intrusions that present there.
Happy to discuss further, but I hope you may all have some ideas of your own to address some of these top-level issues more expediently.