If you have received your ticket after the payment, but can not find it now, it should still be somewhere there in your inbox. Please search by the email firstname.lastname@example.org. Your ticket should appear in the search results.
If you know that you have received your ticket, but can not find it in your inbox after searching by email, please contact us: email@example.com
If you have payed for your ticket, and did not receive it, please check further actions in this article here.