Rating issues



I was penalised by codechef and was awarded zero rating due to that. After which I attempted May Challenge and solved 5 question, my rank was 502 and was awarded +128 rating. So overall my current rating is 128
My friend attempted the same, rank around 1338 and solved four question and was awarded +168. Can anyone explain the logic behind this??

my account- https://www.codechef.com/users/sid55
friends account- https://www.codechef.com/users/asaurav025


Anyone please help as to on what basis it is being evaluated


Please atleast look at forums first. This issue was reported earlier. I am already looking into it.


can you please share the link of that forum please