In regards to the email receipt it looks like things going through ok on the site, could you post your confirm page in a zip archive to this thread so that it can be looked at more closely. If it contains any sensitive details don't post it and I can open a ticket for you to post. 
I also have this problem: the email with the order details is not sent. Other emails are sent (forgot password, registration) but the email receipt does not ever get sent.
--rayne


