Yes, Kiwi Return Saver is compatible with other Shopify discounts, but with some important limitations.
The Return Saver discount is applied as an automatic discount when the customer opts in at checkout. Shopify allows automatic discounts to stack with discount codes, so customers can use both:
The Return Saver offer, and
An additional promo code or discount code (e.g., sitewide sale, free shipping)
However, Shopify only allows one automatic discount per order. If you’re running another automatic promotion (such as a sitewide sale), it may override the Return Saver unless that promotion is paused or ends.
To prioritize Kiwi Return Saver:
Make sure it's the only active automatic discount for eligible products.
Review your Shopify discount settings to avoid conflicts.
For more details on how stackable discount combinations work in Shopify, check out Shopify’s guide to discount combinations.