Hi everyone. I posted a message here that addresses some of your questions/concerns.
Regarding documents in other languages, as long as the name on the document is the same – and in the same script (e.g., Latin, Cyrillic, Kanji, and so on) – as the name you provided when you signed up for Fab, there should not be an issue with non-English documents getting through the process (assuming they meet all other required criteria, of course).
If you ever have a question about your own specific case, please reach out to support.