Wordpress Font Fix: Cloned site custom font doesn't load on mobile

General information for the website: Fonts show up no problem on the site it was cloned from.
Kind of development: Customization of existing website
Num. of web pages/modules: 1
Description of every page/module: Font issues on every page.
Description of requirements/features: Hello developers,

Ideally looking for someone UK based to help with a font issue on a Wordpress website.

I can provide links to both the origina website and the clone.

The problem is on the cloned website the body font doesn't load - I think it is being loaded from fast.fonts?

I need someone to fix it for me and tell me exactly how you did it so I can learn. Good tuition skills required.

This job will lead to others.

Regards,

G
Extra services needed: Customization
Specific technologies required: CSS, Wordpress, HTML, tutoring skills
Extra notes: