It would have been helpful if I had known the languagelist config had to be typed into the xml file, I spent too long looking for this option inside the builder :P At least it works now, thanks. (edit: I saw you wrote to type it into xml file, this was before you answered me and I was still trying to figure it out myself)
It seems the email issue is a chrome issue only, I cant get it to work on sites outside juicebox galleries either. But thanks!