The bank mandates such documentation to authorise the account owner; otherwise, anyone can use the account and routing number for fraudulent purposes. Although it is a lengthy process, it is important for your security. If you don’t want to deal with this, you can use any other payment option to place your order.
If you wish to cancel this order you can skip sending the additional documents and the order will be automatically cancelled and you may directly place a new order with any preferred payment method such as Crypto, Mastercard, PayPal or gift card. For Crypto payment you will receive additional discounts which you can find in the checkout page.