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Top Questions
1. How can I cancel my order? I have already paid.
2. How can I pay for my order using PayPal?
3. Why was my payment declined?
4. How can I change my credit card information?
5. How can I change the payment type for my order?
6. My invoice has a qualified electronic signature. What does this mean?
7. How can I pay for my order using WebMoney?
8. The qualified electronic signature is invalid - What does this mean?
9. What payment types are available?
10. How do I pay by credit or debit card?
My invoice has a qualified electronic signature. What does this mean?
A qualified electronic signature is an electronic signature that ensures the integrity of invoice content and confirms the invoice issuer's identity. Due to legal requirements, we include a qualified electronic signature on all PDF invoices to customers who indicate a billing address within the European Union.

If you receive a PDF invoice with a qualified electronic signature after you have completed your order, you can use a separate program to verify the qualified electronic signature and create a test log. For example, you can download the digiSeal reader application free of charge, install the program, save the PDF invoice on your computer or other system and open the file using the digiSeal reader. The signed invoice and the test log are used for submission to the tax authorities in the European Union.

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