Where can I submit my solution to a problem of a contest that just ended?

I took part in this contest: Contest Page | CodeChef

Due to some problems, I couldn’t code after submitting the first 2 problems. After the contest ended, I saw the problems and would like to submit the solution to both of them but I couldn’t see them in the ‘PEER’ section as well. Please help!

Because the problems are of external contest, many times delay occurs in adding the problems to peer section. Write a mail to feedback@codechef.com. I did this twice before or wait for some hours or 1-2 days. They’ll be added asap.