For some reason, none of my text formats work in Firefox, and everything shows as Times New Roman. I've tried adjusting the hierarchy of the formats and everything, but still no dice.
Text Formats Not Working in Firefox
If you could please post a link to your website we can have a better look :)
Also it could well be that the Firefox browser doesn't register your font.
As a test you should convert the font to .woff format that is web browser friendly and then upload and see if you have the same issue.
You can use an online converter for this e.g:
Talk soon & best wishes
it's happening on safari, right now too.
I think there's something wrong ~ today