Ninja Forms + Secure Form
Control who do confer you form based regarding a password yet popular WordPress eCommerce systems.
This extension lets in you according to proof thy form within two specific ways; the use of a password or validating license keys in opposition to ecommerce systems.
You may accomplish thy form unseen until the protection has been handed yet the approval perform remain done the use of fields delivered in accordance with you form.
The sanction key validation currently supports Envato marketplaces, Sellwire then Easy Digital Downloads. You perform define a manufacture because the authorize key according to keep validated because and enable the consumer according to select the manufacture out of a dropdown in the form.