The wizard’s questions live in the HTML. The rules it writes live in the ENGINE object in the script at the bottom of index.html. Each entry is a list of lines, one rule per line.
To change what the generated file says, edit that object. Do not add a network request, a font URL, or browser storage. The privacy claim is that none of those exist — search the file for http and for localStorage after you edit.
Your own rules on the advanced screen are inserted inside a section, not above it. They cannot override validation or permission.