Like my officemate Mel, I was able to get advance access to Pottermore!

The question that we answered is:

In the Gryffindor versus Slytherin Quidditch match, in Harry's third year, how many points is Gryffindor leading by before Harry catches the Golden Snitch?

Multiply this number by 35.

The answer is 2100. You need to levitate the magic quill before it will allow you to register. And here is my welcome screen:

Yey!

Note: For those who would like to register for the succeeding days, I think new day arrives here in the Philippines at around 6pm.