JetFormBuilder Pro Limit Form Responses Addon GPL Overview & Features:

• Event registration form
  If you are hosting an invitation-only event, you can limit the number of requests submitted by those willing to attend.
• Homework submission form
  Limit the number of applications for online courses and give students the opportunity to submit homework twice.
• Voting forms for Сontests
  Restrict the number of voting form submissions by the user’s IP address, so that the vote from one IP is counted once.
• Job application form
  You have a vacant job opportunity and you want to limit the number of job application forms.
• Online survey
  Send out the survey results with a limit by 1 time to maintain experimental integrity or open the form only a logged-in user.
• User registration
  To prevent the army of bots from spawning the registration form should be submitted only once.

• Limit Form Responses
  Switch on/off this toggle to enable/disable the form response limitation functionality.
• Limit field
  A field where you indicate how many times the form can be submitted before it closes.
• Restrict multiple submissions
  You can restrict users from submitting the form by their IP address, Cookie value, Session value, and the “logged-in” status.
• Restricted message
  A text that will be shown to the user instead of a form provided that they’ve already submitted it. This field supports shortcodes.
• Closed message
  A custom message that appears instead of the form once the response limit is reached. You can insert shortcodes in it.
• Error Limit exceeded
  This error text will be displayed when trying to submit a form with an increased limit of submissions. Allows inserting shortcodes.
• Error Not logged
  This text will appear instead of a form if the user is logged out. You can use shortcodes here.