An alternative approach is to route the user to a selection page like this. On such a page, which is in HTML, you can resolve the missing font issue by presenting the text in graphic form.

I would not normally recommend using text in graphics, but there shouldn't be a big issue here, given that this text doesn't need translating and is perhaps less likely to be searched for.

One thing to bear in mind, however, is that you should route a user to an alternative language and (often) country site that doesn't remove them from their current context, ie. don't force them up to the home page if they entered the site from a link. If they go to a selection page like this, you should return them to the same page (if such exists) in the localized site.