The Drax Cave/difficulty signing up

HI I was invited to join by a moderator(?). [hope that's right :)], in September but encountered difficulty with the funny typed words. The "prove you are not a robot" thing.

I messaged the nice person who invited me back, with these difficulties, but before I received a new hyper-cube, I ran into some technical problems, and was unable to return in a timely manner. I did receive further instructions and can't remember the moderator's screen name.

Can you help me please?