Whoa! What service this sheet does? This webpage takes text in any language, sends it through Google Translate a bunch of times, and then outputs it in any language.
The start and end language boxes only accept language codes from ISO-639-1. Get the list here. If you don't know what language you are pasting in, type "auto" into the start language field.
Not working? A script might not have loaded. Try reloading.