Unable to submit bug report
I went to submit a bug report (complete with screenshot) about the some of the German lessons being partially reset. When I went to submit, the form post was sent to https://support.duolingo.com/hc/en-us/requests, which resulted in a HTTP 403
Well, your problem with your German tree was not a bug, it is an updated version of the tree. That does not explain why the report was rejected though. Maybe that is to do with the new website coding which I have heard is currently being tested.
The link I have for submitting a bug report is from the Duolingo Help section: https://support.duolingo.com/hc/en-us/requests/new Looks like you're missing the "/new" on the end of your URL.