I miss the type in SPANISH every time!
I have no problem with this task, but I always miss in what language to type in! please make it red or something :)
Duolingo actually addressed this problem recently (I used to have the same problem when I started) ! When it wants you to keep a sentence in Spanish, they keep the box on the left. When they want it in English, they move the box to the right side of the screen. I just double checked in my daily practice as well as the lesson and it seems to work!
When you only have audio input, you always type in Spanish. (at least that's how it's been so far for me.)
I got this wrong the first time or two, until I realized that you always transcribe audio, and translate text.