Sometimes it might take up to 20-30 minutes before the transaction is dispatched. In addition, the Bitcoin blockchain, which is a global settlement network can get congested periodically. Remember: Bitcoin replaces an entire central banking system and realizes a final settlement of all transactions permanently. This coordination on the blockchain takes a bit of time. We recommend to keep checking the blockchain explorer link that we send out in our receipts per email or sms. You will see your transaction pending – many wallets will only display fully confirmed transactions, not pending ones.