It makes no sense to put the currency setting at the end of the page in a hidden dropdown menu. Please put it where it belongs: in the settings section!
Options for changing currencies and changing countries are always at the top of the websites or at the bottom. It would be a mess if it will be moved to the account settings. No one does that and it would be very difficult for non registered users to change the currency.
Majority of the websites user knows where to find these options: at the footer. And I think fiverr did absolutely correct according to the website UI.