Cash back and gift feature

Hi,
Thank you for reaching out.

Yes, it is possible to provide specific product as free (Gift) while customer purchase specific SKU or products.
Here is a sample: https://nimb.ws/AMBahU

To know more about how to provide free/ gift products:
https://docs.flycart.org/en/articles/4035579-free-product-auto-add-auto-remove-discount-rules-2-0

Regarding cashback:
Are you trying to return cash for a specific product after placing order?

Can you please open a support ticket here –> https://www.flycart.org/support with screenshot indicating your requirement and site URL so that we can quickly have a check and assist accordingly?

Thanks
Team Flycart