The Chosen Fonts For English Are Not Shown In The Translated Language.

[ChristosPhi]

Hello everyone,

I am using the Dawn theme, the updated version 12.0.0, and my site will be published in two languages, the default language is English and the second is Greek.

I have chosen two fonts, 'Roboto Slab' for Headings and 'Inter' for Body text. Both fonts are Google fonts and support the Greek alphabet. 

The problem is that the chosen fonts work fine in the English pages but they don't work in the Greek one. The Greek pages seem to automatically change to fonts that look like Times New Roman and Arial, for Headings and Body, 

What can I do so that my chosen fonts are shown correctly in the Greek pages (and any other language I probably add in the future)?

I attach screenshots of both english and greek to see what I mean.

Thank you for your help!