Episode stated that Emojis come out as Black and white lines in the previewer but if you looked at them on your phone in the episode app, they’d have full color, so you may be able to see certain fonts, languages, etc. in the app instead of the previewer. To find out, try using the language or fonts for yourself but view the results on your phones instead of the previewer.
I know this is a super late reply but most of the time google translate is very incorrect, I would recommend asking a translator to help out instead of using google translate. I speak japanese (Conversationally fluent) and I see a lot of times where people use incorrect sentence structers with romaji in stories.