I paid for my licence directly online, but I still receive an invoice. Why is this?
There are two possibilities:
  1. You receive an invoice stating ‘This invoice has already been paid
This document is purely administrative and serves as proof of payment. You do not have to pay this invoice.
  1. You receive (in addition to the paid invoice) a supplementary invoice for your event/business
Due to a wrong choice of rate or the declaration of incorrect parameters, you paid too little online. To correct this, we created a supplementary invoice for the amount you have paid too little.
You must still pay the supplementary invoice using the payment instructions on this invoice.