the microphone isn't picking up whether i am pronouncing something correctly or not. it is on
Yes I have had the same problem. At first I thought it was my bad accent but then I realized i could hear my voice when I hit the microphone again after getting something right. For many of the ones I got wrong, the mike didn't pick up anything so I had to turn it off to escape the duo lingo purgatory of saying the same thing over and over and over and never being heard. But I always turn it on again because I need the practice.