And what to do if you don't have and/or don't want to open a PayPal account and failed to make a direct bank transfer?
I have good news for you: when you select PayPal payment to pay for your order you don't have to open a PayPal account.
All you need is a credit or debit card. The official PayPal statement: Buyers Can Checkout Without a PayPal Account
And here is step-by-step instruction how to pay by credit (debit) card without opening a PayPal account.