Downloaded Plugin – Bought License – Can't validate

Hi – I just installed this and then bought the license. I can’t seem to register on your site ( login process failing) so I’ll post here.

I want to validate my license so I can use the custom field search – but it’s not working. I couldn’t register on your site – so I couldn’t download a backup of my purchase.

Please advise 🙂

http://wordpress.org/plugins/wp-ultimate-search/