Then I'd ask you to please check again your language settings, or talk with the admin of your instance. There really is no reason for it to be failing.
What happens if you try posting to the community? (I noticed now that my comments are only accepted if I let the language as "undetermined")
I have no issues posting or commenting here or anywhere else. Yours is the first. What instance is yours? Why don't you report this to your instance admin? I never heard of your instance until you started this comment. You're the one wanting to us to move there for what?