You should have an apostrophe at the beginning of the word. The apostrophe is a proper letter of the alphabet in Klingon. Unfortunately, the Duolingo software gets confused by the apostrophe and fails to look up the definitions we have entered into the Hints. This is a known problem and supposedly the programmers are trying to fix it. However, I'm sure it is a low priority for them.
If you want to read about the other known issues in this course, read the post at: https://forum.duolingo.com/comment/26778885
I wrote "Qol ohbej" and it got accepted and just gave me the translation.
I found the female voice to sound more like a Q than H in the beginning.
And yes I know the h i oHbej is capitalized and just got tired of the extra button clicking (I am on the phone).
I missed the apostrophe tho.