Why I can't pay with my credit card what is 3D Secure

Why I can't pay with my credit card I tried 3 times and changed my credit card. I type about Postal Code 10540 but fail

Hi Chanita,
I checked with our payment provider and I could not see any failed payment attempts. It looks like it was blocked from the browser.
Can you maybe try a different browser or disable ad block addons if you have any?
Kind regards
Philipp

We also have a brief article available for troubleshooting purposes: https://pollunit.com/en/questions/42/i-get-an-error-when-paying-by-credit-card-what-can-i-do