Many custom themes use different class structure rather than that of Magento default theme, which might cause a conflict and make Add Multiple Products to cart not work properly.
Solution:
Step 1: Add Class ID of product list pages or CMS pages
- Open a product list page or CMS page where you want to apply our module, press F12 or right-click and choose Inspect/ Inspect Elements.
In the first line starting with <body , we can find the Class ID, choose a random part of the class ID
For example, in our demo site, it is “catalog-category-view”
In the field: Apply "Add Multiple Products" in backend configure: add ".catalog-category-view ”
Step 2: Add Class ID of product list in the certain pages
In the same page (product list page or CMS page), right-click at a product and choose Inspect/ Inspect Elements
Move the pointer to each line in the Inpact (all tags when right-click at the product).
Stop when noticing a blue background – color covering all all product list
In this line, there is the class (id) we need. Select a random part of this class (id) đó.
For example, we choose “products-grid” at our demo site:
In the field: Apply "Add Multiple Products" in backend configure: add a space and add
“.products-grid” - If it's "Class" in your theme
“#products-grid” - if it's "id" in your theme
Step 3: Save configuration and Flush Magento cache.
Note: classes (ids) will be separated by “,”
For example: .catalog-category-view .products-grid,.catalog-category-view .products-list