Credit Card processing is not working

Since yesterday I’m trying to buy a wordpress theme on themeforest but when I validate the credit card information I encounter a problem and get the following message:

Unfortunately Credit Card processing is not working at the moment. In the meantime, you can use one of our alternative methods, or you can try again later.

Hi,

Welcome to envato Forum.
Please try with clear browser cache or with another browser.

If till no luck you can try with another card (if you have) or paypal.

Thanks