I'll write it here in case someone does the same Google searches as I did: Cloudflare Fonts doesn't work for all fonts. In some cases, it will rewrite the HTML to a link that doesn't exist.
From my testing, if the links are rewritten and don't work, it's not your fault; Cloudflare just didn't do a good job here.
Sure, the feature is supposedly in beta, but it doesn't seem to be a complicated development. What's more, it was released more than one year ago and numerous posts describe issues in their forum.
From what I can see, they released this feature during a rush of announcements in birthday week. So I suspect they rushed it to production and never bothered fixing anything as you can't make a second announcement about it. I really like Cloudflare's service, and it's disappointing to see they allowed themselves to ship with a low standard of quality and not bother fixing it after more than a year.
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