Numbers above 20 and the microphone.
There seems to be a common issue when attempting to pronounce numbers ranging from 21+ (excluding multiples of 10) and Duolingo simply not picking it up (e.g. einundzwanzig).
It has been an issue for what seems to be over 2 years now, and it has yet to be resolved. I am now at the point where I skip any questions which require me to pronounce these numbers.
Are we ever going to get a resolution?