To be able to see your fonts applied in Scene Designer texts you should follow this guide step by step.
First you should navigate to Media Library;
Then create a Folder named Fonts;
Open Fonts folder and create another folder with your font's name;
Upload your font files with pre-defined names, (you can also rename files after upload);
Font names must be regular, regular-italic, bold, bold-italic
Supported Font files by Media Library are; .ttf, .otf, .eot, .woff, .woff2, .svg
If you also have a preview image of the font you should name it preview(.png, .jpg etc.)
In below example we have added Source Sans Pro as preview Image
Now you will be able to apply your font in the Scene Designer;
At the end you must have the below folder-file structure;
Fonts
My Custom Font
regular.woff (required)
regular-italic.woff
bold.woff
bold-italic.woff
preview.png
Pricing Font
regular.ttf (required)
bold.ttf
preview.png
Greeting Font
regular.otf (required)