Once the ticket has been paid for and the payment has been successfully processed, the ticket will be automatically transferred to your Wacken Ticket Center account.
You will then find the ticket under "My Tickets", where you can manage it.
Note
The ticket will only be made available after the payment has been successfully received and processed. Information about how and when the ticket can be downloaded or added to your mobile wallet can be found in the FAQ article "How Will My Ticket Be Delivered?".