> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://ker-sun.crisp.help/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How do I get an invoice?

To receive an invoice, simply send an e-mail to Customer Service with your first and last name and order number. We will send the invoice to the e-mail address you have provided.