I have translated an article but Duolingo does not acknowledge it and let me move on in the lessons!
having the same issue as well ... i've translated the entire article (even have all 100% checkmarks next to each translation). I've rated all suggestions i can rate. The progress pie chart on the right shows 100% ... but I still cannot move past the translation ... its the one "El bolso Downtown de YSL en Topshop"
You are about the third person that has mentioned that problem. So something must be wrong with their system. Try the Feedback tab or some way of emailing them. They don't respond to Facebook posts as far I have experienced.