Yeah, I was going to say you should clear your cookies, etc.
But someone already beat me to it.
Then, I was going to say that you might want to consider switching
the Proxy Provider/Program you're using.
But looks like someone else beat me to that, too.
There are some smart fuckers on this forum!
You've gotta love it.
I suppose the only other thought I could give to help you now
would be to see if you can use another computer,
like a laptop or something, and maybe try it
at a different place that doesn't use the same root IP address...
Perhaps at your library??
Is that possible?
Then, after they're created, you could go in & try to access of couple
of the new accounts with your regular PC.
Just a thought!
---BigDaddy