What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
It is possible with Jotform to Hide/Show form fields using conditions. Here is a useful guide for working with JotForm conditional logic: Smart-Forms-Using-Conditional-Logic.
I presume you mean the 'Authorize.net' integration tool by credit card widget? please correct me if I'm wrong. If it is the case, depending of what you are charging for it might not be convenient to hide it since the field will also contain the products.
If you are referring to something else please let us know and we will assist you with it.