Registration will not work

Every other aspect of this plugin will work but it will not allow anyone to register.

go to this link: http://www.hoopersbazaar.com/product/widget/

add it to your cart (excuse the mess) this is just a theme i grabbed and through up.

Now check out and try to register.

It won’t let you register…it just reloads with some really long password that it’s input for you. I can use this system because of this issue and I really want to.

Anyone else have this problem and/or a solution?

http://wordpress.org/extend/plugins/wpmarketplace/