App doesn't function when away from wifi, even though I updated the app prior to disconnecting
I've had an issue with the app on and off for a few days. When I try to use the app to learn German during my commute, sometimes it won't let me open a lesson- it says it can't connect. Of course it can't connect; I'm on a train and have disconnected from wifi. Even when I turn off the wifi sensor on my tablet I get the same message. This is true even when I've downloaded the latest lesson. It happens 2-3 times/week, not necessarily on consecutive days. It seems to be a recent problem, as I regularly use Duolingo on my tablet every day to/from work and it was always fine until a couple of weeks ago.