ShipStation carrier extension integration issue

[jackson4tube]

I just purchased the Shipstation carrier extension.
It's not showing anything on the checkout page.
It just says "No shipments are available"
And the error log shows:
2026-06-29 18:27:21 - App Error: AbanteCart core v.1.4.4 FastCheckout Error: No shipping option offered to the customer at checkout. Probably, need to check shipping setting!
Trace:
#0 /home/beekckpq/public_html/shop/storefront/controller/responses/checkout/pay.php on line 2078
#1 /home/beekckpq/public_html/shop/storefront/controller/responses/checkout/pay.php on line 1851
#2 /home/beekckpq/public_html/shop/storefront/controller/responses/checkout/pay.php on line 374
#3 /home/beekckpq/public_html/shop/core/engine/dispatcher.php on line 306
#4 /home/beekckpq/public_html/shop/core/engine/response.php on line 87


I signed up for a free trial on the ShipStation website.  Setup the new store and tested the connection successfully.

What am I missing?

The only thing that I can see that looks suspicious is that in the list of extension, the Shipstation carrier extension shows as Category "export" instead of "shipping".

Is this keeping it from showing any shipping options???