Credit Card Keeps Giving Me Message It Did Not "Not Pass Validation"

I’ve tried updating the information like four or five times and it keeps saying it did not pass validation.

Is there something I’m doing wrong??

I’ve contacted support, but nobody has replied.

Are you in Canada? Some credit cards hold up transactions outside your own country until you can verify the transaction. You may not get a proper alert. Some CC’s just deny the transaction. I have to remember to use a specific CC when I renew my license for Harmony. That one processes it without a glitch.