Bundle discounts are created as product discounts, which can, by default, be combined with other product discounts set in the store, provided the toggle to combine with other product discounts is turned on
Bundle discounts can be combined with site wide order discounts by enabling a setting. The site-wide order discount should have the combines with a toggle enabled for this to function.
To combine Shopify discounts with app discounts, follow these steps:
Access the app settings in your Shopify admin dashboard. [screenshot of app settings in your Shopify admin dashboard]
Navigate to the "Additional Configuration" option.
Click on "Bundle settings."
Enable the "Combine with order discounts" toggle to allow bundle discounts to merge with site-wide order discounts. [screenshot of Combine with order discounts toggle]
Note: The site-wide order discount must also have the "Combines with" toggle enabled in Shopify for this to function.
Click Save from the top right corner after enabling the toggle. [screenshot of Save button]