Ranking system

Describe your issue

i have been competing in the codechef since last 3 months most probably
my friend started after me have very good rating while i got very .he is already in 2 star we were doing same no of question yet his rating is very good

  1. the graph is also not there in my account while others have this

Screenshot

Additional info

i m not banned i guess and i never got any mails regarding cheating