Fulfillment service no shipping methods

Hi i am new to shopify app development, so apologize :).

I try to develop an fulfillment service. Everything goes fine.. i can install the app and the fulfillment service can be registered. In the shipping settings I associated a shipping zone with my fulfillment service. Now, when I want to place an order I get stuck with the shipping method as none are available.

Does anyone know what I’m doing wrong?

thank you for your help :slightly_smiling_face: