Submitted 6B twice due to a minor error the first time. The second time was correct but I checked in my submissions page and it says our score for Part B was 0 and the first incorrect submission shows! Still gives me a successful solve message on 6B submission page though. Hope you can check we have the number of points deserved.
[Are you sure, I checked your account page and it showed two submissions for 6B with one of them at 100%. Might be worth taking another look. Harry]