If you want to settle paid products from KLARA by credit card, you can change the payment method in KLARA under "Get widgets - My widgets" and then go to the menu item "Payment settings" and switch from "Invoice" to "Credit card". Enter your credit card data and you are ready to go.
In future, payment for your KLARA products will be made by credit card and manual payment, e.g. by bank transfer, will no longer be necessary.