Progress Quiz (insert sound of annoyance/frustration here)
I was about ten minutes into the progress quiz, and Duolingo suddenly had "problems" and I couldn't finish. Is this particular feature not ready yet? Am I using the incorrect browser? This is the second time this has happened (goodbye, precious lingots!).
It's best to move this thread to the general troubleshooting forum, which you can do by editing your post. We are aware of the placement and progress test issues, but cannot help you out. These are issues that the Duolingo staff has to fix. This also concerns the loss of lingots.
Good luck! :)