How to add start and end date then limit the number of use of a coupon code?

I want to promote with coupon code. Can I set a promotion start and end time? Can I set up one account to use a promotional code only once?

There's no start date, only expiration date can be selected for coupon code. For one time use, you can choose the "By number of uses" option and set it to one so coupon can only be used one time.

You can read more about coupon setup in our guide here https://www.jotform.com/help/233-How-to-Add-Coupon-Code-to-Payment-Forms.

Let us know if you have any questions or if you need further assistance.