No change in final ranking

Recently i attended an unofficial contest on codechef named Code Arena 3.0 Coding contest. Here is the link:Contest Page | CodeChef
In this contest i have solved 5 problems, my 5th problem getting accepted at 10:58 pm ,2 mins before the contest ended. But there has been no change in the contest ranks and it is showing that I have solved only 4 problems. Neither is my rank updated. Is this a glitch or will it be updated later?? Can anyone clarify?