First, I think you can write a email to CFA Institute on this issue and tell them it's only careless mistake and to check how CFA Institute will deal with your case.
After reading some forum on the difficulty of morning and afernoon session, many of them stated that morning session was a little bit easier. I really regret why I didn't attend the morning session because I found the afternoon session was not so difficult. Of course, some questions I don't how to answer and just made a guess.
Anyway, good luck to you