I’m Not able to earn Weekly challenge

In Halo Reach No matter how much I try Getting challenges done they always resets to zero I cannot tell you how much this annoys me Can we please get a delay I want to be able to earn the weekly.

as for other Annoying stuff Whenever I customize my character in Halo 3 Spartans or Elites My customize character keeps appearing as default both playing a match & Main menu I can’t wear whatever I want anymore I wish this wasn’t a problem.