Translating from English into Klingon, would "jIjqangbe'chugh jagh, vaj jan Dalo'nIS" not be acceptable? (It wasn't accepted.)
The difference between "does not cooperate" and "is not willing to cooperate" is minimal and could each be represented by "is not cooperative", so I have added variations with -qang as acceptable translations.
Yes, it is minimal. I almost didn't even ask, but I like to be thorough when I'm unsure about something. Thanks for your response and attention to this! :-)