All of your keys may be found in the Purchases area of your Cyberboom account. Simply click Get Key after purchasing the product.
The Games tab displays the keys for any goods you've purchased, as well as the option to rate them. You may discover further information about your orders under the Orders page, such as the status of your order, the seller you purchased from, the payment method used, and the possibility to obtain an invoice (if you requested it during the purchase). Please submit a Support Ticket if your order is marked as "Completed", but you do not see the key.