Hello,
I have checked the description, and I would like to work on it. but before that I have a question for you.
What is causing problem is it jQuery library or a custom js?
By the wa, I am an experienced Web Developer with a shown history of working in information technology. I am skilled in PHP, HTML5, Bootstrap, Bootstrap 4, Cascading Style Sheets (CSS), jQuery, Shopify, liquid, Photoshop, Illustrator, basically I have 4 years of experience in the same field.