Oh ok,
I have already tryied with CoD RCON Tool and it gives me an error:
Connection error :5922 might be down or you have entered the wrong IP adress.
Well, that means there is a RCON issue with the server. Not a issue with B3. I would advise you to go to the alterIW.net forums and ask them for some help to fix this. Or your host if you are paying someone.
P.S. Sorry for editing your post, I thought I hit quote, but it was modify. Once again sorry, my bad.