on the confirm page, look for the following form element:
<input type="hidden" name="address_override" id="address_override" value="1" />
and change it's value to 0:
<input type="hidden" name="address_override" id="address_override" value="0" />
the error indicates that you are using PayPal Payments standard.
Universal Email will not be applied to checkout pages using Universal Email.
the Paypal system will handle sending the receipt email, you will need to configure the paypal account to send the receipt email to the store owner as well as the customer, for assistance with that, you should contact paypals support.