I have discount code incentives in our brands discord server for active users. As they climb the ladder in levels from chatting, they get higher value discount codes. I have all the said discount codes set to combine with other product discounts, however when a customer adds two of their coupon codes, the higher value one seems to trump the lower value one. I have attached a screenshot of the error message being displayed. My website is https://ditch.la and password is DitchBlanks. You can try using the codes yourself:
$5 off: YYHBKTKYVXBM
In Shopify, when a customer applies multiple discount codes to an order, the discount with the highest value will be applied. This means that if a customer applies a $10 off discount code and a $5 off discount code, the $10 off discount will be applied to the order.
If you want to allow customers to combine multiple discount codes, you can set the “Usage limit” of each discount code to a value greater than 1. This will allow multiple instances of the discount code to be applied to an order.
Alternatively, you can create a single discount code that combines the discounts from multiple codes. For example, you could create a discount code that gives $15 off an order, which is the sum of the discounts from the $10 off and $5 off codes. This will allow customers to apply the combined discount to their order without having to enter multiple codes.
I hope this helps! Let me know if you have any other questions or if there is anything else I can do to help.