Owner can't receive order confirmation message / users can't get registered

[Regnet]

Hi, I have these two problems:

1. When an order gets finished, the store owner doesn't receive the order confirmation mail.
2. Users (buyers) can't get registered. When you fill all the fields, and clic the "register & order" button, it simply doesn't work (nothing happens), the page just loads again and the data filled in the fields remains (except password), but even if you write it again nothing happens.
My Joomla version is 3.4.8
My V.M. version is: 3.0.12

Your kind help will be very important. The project needs to get in production ASAP.

Thanks a lot.

[jenkinhill]

It could be simple. Post the URL.

[Regnet]

Thanks, this is the url:
eugeniacarlos.com/fds

By the way, PHP Version is 5.4.42

Kind regards.

[GJC Web Design]

Have you got a proper menu to the VM homepage (hidden or otherwise?)

why is the producto menu ->  http://eugeniacarlos.com/fds/index.php/2015-05-27-18-16-00 

submitting the registration form gives a 303 response  -- i.e as if its routing is incorrect

try with sef off