In the forum post I linked, @TG2 recommended uploading the fonts you want to use as Custom Fonts in Project Settings (even the Google fonts). They also recommended renaming the fonts you upload to be sure there’s no confusion that you’re using the uploaded fonts vs. the hosted versions.
This tool may be helpful with self-hosting Google Fonts.
Also, it looks like you assigned Roboto as the default font for a class called ‘Body 2’ rather than the pink ‘Body (All Pages)’ tag that will show up when you click ‘Inheriting x selectors’ above the class field.