Help Center
Whether it's common questions, step-by-step instructions, or short how-to videos – here you'll find helpful information about our products and solutions.
Learn moreCustomers get customers
Recommend us further and enjoy an attractive thank you. If your referral becomes a new customer, there will be a discount for you.
Learn moreKnowledge & studies
Everything you need to know about payment: valuable studies and interesting insights compiled for you.
Learn moreCustomer service
Our client service team will be happy to help you with technical as well as commercial questions.
Learn moreDownloads
Our flyers, forms, operating instructions and acceptance logos are available to download free of charge.
Learn moreOur technical and support team
- Available from Monday to Friday, 9:00 a.m. ‒ 6:00 p.m.
- 24/7 support for technical emergencies
- Support in German and English
- Trouble-free device exchange


