Hello, Sorry for the frustration with this.
I can help get this resolved.
Can you check in WooCommerce->Orders and let me know what the order status is for all the ticket purchases.
If they are not set to Complete, the tickets will not show in the attendees list.
If they are not complete then please do a bulk edit to change and see if they show.
If you would like all future orders to be automatically be completed you can use this coding from WooCommerce
http://docs.woothemes.com/document/automatically-complete-orders/
If the orders are Complete please let me know and we can do some other things to trouble shoot this.
I apologize if the documentation did not make this clear about the completed orders, we are working on a solution to provide better information on the Attendees Page to make you aware of the uncompleted orders.
Let me know what you find out and we can go from there.
*I have move this topic to WooCommerce Tickets