When I communicate with guests who appear in my Festival Plaza, I select "Let me see how you are doing" and switch to the next page to bring up the 'Questionnaires" page. Questions include "Where do you fit in your family?", "Which Pokemon region is your favourite?" etc.
None of the questions that appear in this screen are available through the profile option in the Festival Plaza menu and none of the NPCs available to me seem to allow me to fill in the questionnaire. How do you change the answers from "No idea"?