1. Billfox web application will generate Digital Invoice from web app. https://app.billfox.de/2. Customer will create invoice from billfox website.3. Customer will login with mobile application and redirect on dashboard.3. Generated Digital invoices will be displayed on dashboard screen.4. Billfox customer will click on pay invoice button and will be redirect on zettle screen.5. Customer pay invoice through zettle terminal and back to on dashboard screen.Please check video: https://drive.google.com/file/d/14qq-2K8MUM2-sgVK5zw_KyjREZOhqivB/view