Slitherine

..and brushed my teeth, heck I even had a shower, but when I try to get into the 'Close Combat: Bloody First' forum, I get the message "You are not authorised to read this forum".
Why won't the bouncer let me in?

Because the discussion about that game takes place over at Matrix forums:

https://www.matrixgames.com/forums/tt.asp?forumid=1254