Load Lightbox one time not working

Tried adding lightbox to my home page AND added the suggested one time cookie scripting. Lightbox still loads everytime home page is loaded. I need your help, please!

To clarify, you have used this guide to load your lightbox?

https://www.jotform.com/help/140-Using-cookies-to-auto-open-a-lightbox-form-per-browser-session

You may also check my colleagues work around at this thread using cookie check:-How-can-i-create-a-light-box-jotform-with-cookie-check