Where's the addresses? (Patreon)

OK, I'm getting ready to snail-mail my patrons the minicomic I've been promising them. Or trying to, anyway. Patreon FAQ sez: "If you select the "view all current patrons" tab or select any paid post you can click the "show" button right next to the mailing address header. If you're trying to copy and paste all of your patron's mailing addresses it will be easiest to download a CSV. The mailing addresses will be included in that download!" There is no "show" button, anywhere I can find, let alone a "Mailing address header". Under "Patrons" it lists the names of my patrons, and nothing else. No buttons, no nothing. Also, what the hell is a CSV, and where would I download it from? This is stunningly unhelpful.