Any luck with creating custom audiences with @fb emails?

So, I found a good scraping tool for pulling names, UIDs and emails from posts[ facebook-likes-scraper . tiny-tools . (com) ]. The issue is that it only pulls the @Facebook . (com) emails.. When I try to upload these into a custom audience, it doesn't work. I have tried multiple different ways of uploading the file and nothing seems to work so far. It doesn't give me an error message, but when I upload a list of a few hundred, after a few minutes it says "audience too small". When I try to use that audience to make a lookalike, it says the audience must be over 20 people. Does anyone have any suggestions?

Did you work that out?