Event Tickets: On Purchasing ticket, No Confirmation Emails

Hi,
After purchasing a ticket to an event, the customer does not receives a ticket confirmation via email.
I am using Events Tickets. I have confirmed that if I use RSVP as my ticket type, I do get a confirmation with tickets via email, but when I have attempted to purchase tickets via PayPal I didn’t get any email neither confirmation email nor tickets.
I have tried searching for settings to enable the feature (both in the Event Calendar/Tickets area) but cannot find anything. Based on my search of the web, I think the emails should be sent automatically as soon as the order status is marked as ‘Completed’. We need to be sure our purchasers are receiving their tickets!
Thanks in advance!