One of the most common mistakes is related to inattentive blockchain selection. Some send USDC via a different network, even though the exchange accepts tokens exclusively in the ERC20 format. In this situation, the exchange may be suspended until manual verification, and sometimes the transfer must be restored by contacting support. It is equally important to correctly enter your PUMB bank card details. When submitting your application, carefully check the number, as even a single digit error can result in the transaction being canceled or the payment being delayed. Therefore, before confirming your application, double-check all details, including the cryptocurrency address, the selected network, and the final amount. Many also forget to consider the current Ethereum exchange rate and commission fees. Since the Ethereum blockchain operates under dynamic load, the cost of processing a transfer can change throughout the day. Before making an exchange, it is recommended to review the final calculation in advance to understand the actual amount credited to the PUMB UAH card.