Different Font on Mobile

I was wondering if anyone else has experienced this - Everything looks great when I’m in editor mode, but when I publish the site and go to check the live link the fonts are wrong! I already added a css code as well as updated all the fonts in the global panel and individually and it is still showing the wrong font. Any ideas what could be happening?

Editor mode (correct fonts):

Can you share the CSS you’re using?

Have you tried doing this without custom CSS?