Regarding less marks in bank loan case study

I got 35 marks out of 50 and I was provided a feedback to perform correlation analysis in this project. So, I have resubmitted the project after doing correlation analysis as my 3rd attempt. Now, there is no feedback, project is approved with Great grade but marks are still 35, atleast some marks should be increased as I have resubmitted the project by doing the corrections provided as feedback in my second attempt.