According to their website, they are open.
There is a lengthy post by them, on Costa Maya further down in forums.
Things are in pretty good shape, etc, but getting power via their generator.
All that being said, I have not gotten a reply form them either, and I have tried several times. I am oging Sept 8th and am trying to firm up all of my plans.
Who are you fishing with, do you know? I am planning on hiring a guide for a day or so when I go, I have been looking around.