This app could very easily be a 5 star but whenever any kind of issue arises be it technical or an if there is an issue with the lesson itself there is nobody that is available for any kind of assistance ever. You can submit email after email for eternity and you will never ever get a response back. They simply don't care. I actually paid for the duolingo plus so one would think I would atleast get the some kind of reply as a paying customer but you would be wrong if you thought that.