When introducing a new noun in German, please give us both singular and plural
On the "new noun" pages, it gives you audio and text of the singular word with some photos of the thing. Since German plurals are inconsistent and unpredictable, it would be handy if you also provided audio and text of the plural of the word.
In Basics 2 they gave me teacher for the first time asking me to translate from German "die Lehrer" and when I said "a teacher" it shot me down with no explanation. I had to go to the comments to learn about pluralizing articles.
Happened with me as well. But I was given the correct explanation, though I suspect if there's bug, cause' manier times the program (I use the app for iPhone) wouldn't even recognise the mistakes. Also, it could just be a network issue.