If you’re from US; forget it guys. Our cards won’t work with their networks. Woke up at 3am for this, tried all my cards, and even called card support for 3 of them and ‘3D Secure’ is not something that is supported here; and these were big bank card issuers that I have. What a shame, super disappointed. I was so excited for this. Please consider accepting PayPal in the future.
There are many reasons why the card is rejected.
What is related to 3D is related to security.
If you send me the message you received by email, I will check the exact reason.