All European merchants are required to support it. When you don't see the prompt, it's due to this: https://3dsecure2.com/frictionless-flow/ https://3dsecure2.c

All European merchants are required to support it. When you don't see the prompt, it's due to this: https://3dsecure2.com/frictionless-flow/ https://3dsecure2.com/frictionless-flow/