All categories General questions about my merchant login How do I initiate a (partial) refund? How can I change my SEPA direct debit mandate? How can I change my bank account data? Show all Questions about SOFORT GmbH and Klarna What's the relationship between Sofort and Klarna? Are there any costs if I run a non-profit business? What does it costs to offer direct banking as a payment method with Klarna? Show all Support Hotline Czech Republic Slovakia Hungary Show all Technical and integration issues When should I select a "Classic" project and when should I select a "Gateway" project? I received the error message "8001". What does this mean? Where do I find the modules for my shop system and the related integration manual? How is my shop system supported? Show all Show all Show all Show all Show all Sorry! We didn't find any results Search results Need help? Contact us!