How to limit the forms to use?

I have a form that I will charge for the user to use. How can I limit the number of times they use the form? is this possible?

Thanks

I asked this and the next question 4 hours ago, is anyone available to help please?

Cheers

We are sorry for the inconvenience this may have caused. Please be noted that the questions asked will be answered in the order they come in and assigned. 

I understand that you want to limit the user to submit the form only once. If so, you may consider setting up a unique question on the form such as email address or phone number. Please refer to the guide below that can help you with this.

https://www.jotform.com/help/223-How-to-set-Form-Limits-Based-on-a-Unique-Question

Hope this information helps. If you are referring to something different, please let us know. We will be happy to help.

Thanks Kiran