How did I get Japanese already?
Why did I get Japanese already, when it's not released yet? I wasn't able to complete any lessons and realized it's not on yet. What a mystery. All the other trees are legitimate, but I've been away from them for a while and they all went blank. Is this the eventual fate no matter how golden some trees are? When I realized this, I stopped pretending to be so perfect all the time.
Get the ARC Welder Chrome extension, https://www.addictivetips.com/ubuntu-linux-tips/run-android-apps-on-linux/ and then download the DuoLingo APK, https://www.apkmirror.com/apk/duolingo/duolingo-duolingo/duolingo-duolingo-3-57-0-release/duolingo-learn-languages-free-3-57-0-android-apk-download/download/ This allows you to run the DuoLingo Android app in Chrome. I just tried it on Ubuntu 17.04 and did a few Japanese units.