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This is because your account has been suspended because of phishing, you're asking for Credit Card details in one of your forms: http://www.jotform.us/form/53434429317153
Here is a screenshot of the guilty fields:
I had removed those fields in order to re-activate your account, please also check our terms so you know what you can and cannot ask in your forms: http://www.jotform.com/terms/
Also, you must use one of our payment integrations if you want to ask for Credit Card information, here is the link to our current payment gateways: https://apps.jotform.com/category/payment_processing
Here is also another guide that may help you: https://www.jotform.com/help/292-How-to-Enable-Payment-Authorization
If you have any question, please let us know.