I abandoned Duolingo 6 months ago. If that's true, they failed to advertise that to me. In any case, with modern llms you don't need Duolingo for that. You can ask them. You can copy-paste any article on a subject that interests you, and ask an llm to simplify it to your A1-A2 level. You can ask it to generate exercises, to explain things. Flashcards? Please, Anki is free.