I cannot reply to a post on WPMUDEV support blog

I have a post about a problem with blogs directory. I got a response, I went to your forum and tried to reply. It won't let me and I have wasted far too much time on this. I have authorized access to the site. Please address this issue A.S.A.P. as we are evaluating what products we are going to use and I am doing the WPMPDEV eval.