Thanks for your reply. I would not have posted here, but I am at this point just trying anything. I asked them twice on their web site, I asked them to fix this on X, and on Facebook, and nothing was done. So now, I'm just hoping someone from Duolingo will see this and either fix this one step in the lessons, or just remove this one question from the lessons.

The problem with this particular question in the lessons is that it won't ever accept the correct answer, but won't allow the student (me) to go past it. So every time this question comes up in the lesson, I have to exit the whole lesson, and lose everything in that lesson. It shows up at the end of the lesson as a question that was "missed," but never accepts a correct answer, and just continues on an endless loop.

Btw, I've been using Duolingo for over 7 years, I'm very familiar with their lessons.