Hi,
The e-mail arrived 15 minutes ago. I've just checked the site and it seems all right, I don't see a reason why this doesn't work, since all the variables are sent correctly using the POST method. I've tried disabling SEF completely, and it also doesn't work in that case, which means that this is not a JoomSEF problem. Maybe you have some custom rule in your .htaccess file which causes this?
I'm sorry, but we cannot offer you free support with a problem not caused by JoomSEF. However, if you would like us to check your website more thoroughly and fix the problem for you, please purchase 1 hour of our support time at:
www.artio.net/e-shop/support-services. In that case we will also need an access to your FTP.
Best regards,
ARTIO Support Team