It can be very painful when you find yourself in this kind of situation, it happened to me recently, I was hoping to submit my article for DEGO on the last day but by the time I concluded the article after so much work, I discovered that the submission is closed, I felt so happy that I have wasted my time all day writing an article which I couldn't submit for a reward, but we must learn to move forward. The manager is not to be blame here.