In this case, please contact us in a new Support Ticket and we'll see if we can set you up for Postpay that works as explained:
1. First of all you need a customer account. We set you a credit line (for this we would need to know how much you plan to spend). From this money you can carry out orders.
2. At the beginning of each month, we create a collective open invoice for all completed orders from the previous month. You will receive the invoice via e-mail.
3. The invoice remains open until we receive your transaction and charge your account accordingly.
4. Then we set the invoice to 'paid' and the previously occupied money of the credit line is again available for you and thus for new orders.