Cannot access next level
I have successfully completed all of the levels (up to "Phrases", learning French through English), but I cannot click on the next level for some reason.
I tried refreshing my browser. I also tried clearing my browser history and re-opening the browser. I still cannot click on the next level. I also have the same issue with the Duolingo iPhone app. I checked and re-checked and I definitely completed the previous level.
I use Firefox in OS X Yosemite.