Plugin Is Not Working

I am using your plugin multiple times on one page and it does not work correctly. I sent the issue to my web designer and he said There are loaded multiple instances of the wrapper from plugin. Sometimes a few of them work and other times they don’t work at all. I am trying to get this sorted as soon as possible because I am selling these presets today. Please let me know if you can help me sort out this issue. I have attached a link below. Thank you so much!

Link: https://gregpetersen.co/presets/