Credit Card numbers being replaced with "x" on submissions

Hello, I do not see the answer to my previous question.....i have a form to collect my customers credit card forms, but when the submissions come in they show some numbers and the remainder fo the numbers show "xxxx"

How do I fix this? Thank y

You cannot collect credit card numbers on plain text fields, this is a violation of our terms of use. Instead, please use any of our Payment integrations.  

Dwolla integration, is in particular a great choice for USA based business, it offers to accept payments with no fee per transaction