setting different fonts to different headers in 7.1

Hi,

I've created this site on 7.1 https://latara-trial.squarespace.com/ (pw: latara) Since 7.1 wont let me assign specific fonts to header 1, 2, and 3 I've added a h4 with pinyon script as a font. I havent had to upload the font as it's provided in squarespace as a font. However, while I see it displaying on my laptop, I dont see it displayed on ipad or iphone browsers. Is there a way I can choose to add specific fonts for my headers as I could in 7.0? Pls help

Thank you.