Messages

Hello.
The "FastCheckout Error: No shipping option offered" message usually means there are no enabled or suitable shipping methods available for the customer/cart/address.

Please try enabling at least one valid shipping method and test again.

For the ShipStation Carrier extension specifically, please contact the extension author through marketplace order support: https://marketplace.abantecart.com/order-support fnf

Yes, the "export" category is a strong indication that this extension only sends order data to ShipStation and does not provide live checkout rates. You will likely need a separate shipping module for customer rates, while using ShipStation only for fulfillment and labels.