Zapiet - Rates by Zip Code should be added as a carrier in Shopify when the app is installed. You can check that it has been added correctly, and add it manually if it's not.
If you’re using Zapiet - Rates by Zip Code together with Zapiet - Pickup + Delivery, take a look at our Zapiet - Rates by Zip Code integration article instead.
Requirements
The Carrier Service API is required when using Zapiet - Rates by Zip Code, in order to show the rates in the checkout. You can learn more in our Shopify Carrier API guide.
All physical products need to be marked as This product requires shipping in Shopify.
You need to create a delivery zone before adding the rates.
You need to create rates for a delivery zone.
Add Zapiet - Rates by Zip Code as a carrier
Zapiet - Rates by Zip Code will be enabled on your store by default.
In Shopify Settings, click Shipping and Delivery.
In the General shipping profile, click Manage.
Check if Delivery Rates by Zip Code is added as a carrier for your domestic shipping zone.
If Zapiet - Rates by Zip Code is not added to your shipping profile, click Add rate.
Click Use carrier or app to calculate rates and select Zapiet - Rates by Zip Code.
Add a handling fee if needed, click Done.
Click Save.
Zapiet - Rates by Zip Code is now generating rates for your store. You can test your delivery rates.
If you are using custom shipping profiles, you need to add Zapiet - Rates by Zip Code manually by following steps 5-7.