Elle here from Shopify.
I'd be happy to help you out with this issue. Would you be able to share your store's URL so I can take a look at your site?
Also, can you let me know the following:
- Approximately when did this issue start?
- Have you made any code changes recently? If so, what theme file(s) were modified?
- Have you added or removed any apps around the time this issue appeared?
Looking forward to hearing back from you soon!
Your site seems to be highly customized so it's likely that the issue with the add to cart button on your homepage has to do with the modifications made to the Debut template. Did you have a developer make these changes for you?
I would highly recommend utilizing the sections within the Debut theme to customize your homepage. This will result in a much better user experience for your customers. With sections, you can link phots, text, products and collections to the homepage with ease.
We have a helpful video which will show you how to customize sections on your storefront here.
Let me know what you think!