Done. That link took me to your "welcome back" page, but I was able to get to the new user page. This link might work for the blank page if anyone's having trouble
http://ga3.org/campaign/polar_bears?rk=2p%5f5dBS16Xf2E
On edit: It probably wasn't your welcome back page, the user of this 'puter is probably already involved with that group. I'm not on mine today.