You will be redirected to PayPal payment page when you clicked the ‘Finalized Your Payment’ button.
Login to your PayPal account to pay using your PayPal balance or through bank or credit/debit card linked to your PayPal account.
You can also pay using your credit/debit card or bank account even without PayPal account. Just click ‘Pay with a Bank Account or Credit Card’ button on the PayPal payment page.