I used the informal form (ти) the answer used the formal form (ви) and my answer was marked wrong.
I did the same. Що ти знаєш про джаз? Not accepted
Maybe the informal answer isn't added yet. Was your verb also informal (знаєш)?
Що ти знаєш.... marked wrong.
still the same. reported..
I also use informal form And it has been marked wrong. And I have a question: which case we have to use with про? Дуже дякую!
Well, now ти , is accepted and ви is rejected!
Oh, brother! :/