The option to purchase on account is carried out by our partner Klarna. As soon as your order has been shipped, you will receive your invoice by email with the payment steps and a request to pay the invoice within 14 days. Please also check your spam folder. If you cannot find an email from our partner, we can send you the invoice again at any time. Our return period is 30 days. If you return parts of your order after the 14-day payment period has expired, our partner will refund the amount already paid to your account. You can find more information about Klarna here : Please note that we cannot provide any precise background information if payment by invoice is rejected by our partner in individual cases. You can contact Klarna customer service directly here