Duolingo updated/revamped Plus but did not communicate this to the users in any fashion. Just left it up to users to figure out what was done. Not nice, but Duolingo does not provide any kind of instruction beyond the lessons themselves. The users have to waste time trolling the internet and solving the changes on their own. Fine, if you have the time, but *** if your time is limited. in User's recommendation: You are totally on your own. Don't expect any services other tha the lessons themselves.