I'm torn on the rating here. Duolingo is a great resource for learning languages, but there is no support for technical issues. For example, it stopped doing speaking exercises for some reason, and I followed the instructions on the help page to try to fix it, but it didn't help. I even paid for the premium version hoping that would fix it, but it didn't. I've tried reporting the issue, but I only get an automated reply saying that I should check the help page.