Another Pottermore câu hỏi

This probably gonna be an ongoing thing with me asking questions, until I get the hang of the Pottermore website.
But I'm wondering, how do bạn advance to the một giây book? I have finished the first book and JK Rowling đã đưa ý kiến her congrats and whatnot, but I can't di chuyển on; I'm still stuck on the last chapter of book one.
Is there something I have to do first, like gain thêm house points hoặc something?