We use Saferpay as payment gateway since years successfully with DT Register. Now Saferpay switched their method to JSON API. I assume that DT Register has not implemented this option properly, although still selling this Payment Gateway. Because after upgrading to the latest DT Register it is not working.
Any help? recommendations?
Saferpay instructions: <https://www.six-payment-services.com/en/shared/campaigns/3-d-secure-2-0-saferpay-faq.html>