Your orders are delivered as soon as your payment is secured, and confirmed onchain. Some payments are accepted instantly such as the Lightning Network as well as Dash payments.
Other transaction types and cryptocurrencies may require more network confirmations before payment is accepted and your order is delivered. Once confirmed onchain and funds are received by Bitrefill your invoice will update and the product will be delivered. You will also receive a confirmation email once the order is complete in the event you do not keep the invoice window on your device open.