Are you using the theme itself or is it using a child theme so that you can make changes without the problems of loosing your changes when the theme is updated? If you are not using a child theme then setting up a child theme would be the first step.
With a child theme in place, more than likely you could add a get_term_args filter to change the sort order used by the theme https://developer.wordpress.org/reference/hooks/get_terms_args/
