Hey @Teresa Han 

Thank you so much for reaching out to the Klaviyo Community for help with this! 

I have one quick question for your, what ecommerce site are you using to process your orders? The Aftership integration is great but wondering if we can simplify this for you if you are using Shopify, Woocommerce or one of our other native integrations. There are alot of roads to get you to point B but want to make sure I give you the best answer for your business!