Hello?@marinblu
It seems that I misunderstood your question and jumped to conclusions too quickly.
The core of the issue seems to be that ACDC currently does not trigger early WooCommerce validation before processing the payment. This can result in a scenario where the buyer clicks “Place order”, and goes through the 3DS popup, and only after confirming 3DS, a WC error is shown.
Regarding the standard card button, it should trigger early WC validation just like the PayPal button. If you are experiencing issues with this, it might be unique to your setup, and we would need more details to assist you effectively. A system report with your website URL would be crucial for us to test and understand the problem better.
As for a workaround for the ACDC issue, there isn’t an immediate solution available at the moment. However, we are expecting to resolve this with the new card fields in the upcoming January feature update.
In order to assist you further and look into these matters in detail, I would recommend submitting a support request. Please visit this link: PayPal Support Request. When creating your ticket, please include the URL of this thread for our reference, along with any relevant details of your system setup.
Kind regards,
Krystian