I hope you are well today and thank you for your question.
I can see you are using an older version of the Jevelin theme on your website so please update it to the below latest version.
Please login to access this file
Also, please clear your browser cache after updating the theme so that the latest js and CSS files will be loaded.
How do you update the theme? I am having the same issue, but there is no update section or button that I can find. I downloaded the file, but where do I load it?