Finally my Portuguese course is unlocked!
Finally my Portuguese course is unlocked, and I can continue practicing the language.
I hope my Italian course will also be unlocked soon!
Because there is no way I can write directly to Duolingo's staff, I was seriously thinking of abandoning this site completely. I am very happy that they came through for me anyhow!
You can always use the feedback box on the left side of the screen. I look into user problems multiple times per day (even on Christmas). Email email@example.com if all else fails.