i knew all the answers but it was really hard to correctly guess your exact wording, so either simplify your answers/questions, or add extra answers that will be accepted. Also, it's spelled Gellert (ert, not art) Grindelwald.
Accept grindelwald for question 1. Accept parents/lily and james/james and lily/his parents for question 4. Accept charlie for question 6, accept kwikspell letter for question 10.