The problem is that the question is poorly-worded by the Common App. The question immediately preceding “Have you taken the SAT essay?” is “Number of past SAT scores you wish to report,” an optional exercise. If you answer yes to having taken the SAT essay, you are then required to report the “highest combined essay score.” It wouldn’t make sense to require reporting of the essay score even if it is not among the test sittings for the “past SAT scores you wish to report.” My guess is that the question should have been worded something along the lines of, “Did your past SAT sittings that you wish to report include the SAT essay.”
Weirdly, even if you put that you wish to report a large number of past SAT scores, Common App still only provides boxes for the highest of each section score.