Hi there - having a similar issue with my product description page for the two products on my site. I have managed to change the font for my shop page, but when I click into the product description page the heading font for the product "The Arrival Bag" is shows italicized and in the wrong font.
https://www.thearrivalyoga.com/shop/p/sagecedarwood-b2wfg
Any ideas on script here? My uploaded custom font is 'KnockoutCruiserweight' in my CSS.