Wrong answers marked as correct

[kapsel]

Is there a way to report those? And Duolingo's mistakes? For example, when I'm supposed to choose correct translations of a phrase and I lose a heart, because according to Duolingo a grammatically wrong answer should also get marked?
It's rather common in the French course.

[1km]

There is no "Still think you are right?" option on multiple choice questions. So use the "Feedback" tab on the far left of your screen.

[kapsel]

Thanks.

[Delphi]

Many of answers are very unnatural. I ignore them, just trying to be aware what really correct in real life. Time goes on and so we have to! Good luck.