10Web does not collect any information from end-users. The form submissions of Form Maker are stored in your WordPress database and are never sent to anyone, including 10Web. The only exception is if you choose to use WebHooks or other extensions to send data to a third-party service.
Payment information is secured by PayPal or Stripe, depending on the method chosen by the user. Credit card data is not stored anywhere except Stripe or PayPal. The submissions section includes basic info about the payment status, amount, etc., but not credit card info.