Invalid delivery method

Hello! When I try to fulfill an order by Aliexpress order I have an error message :
Invalid delivery method on the status column:
What did I do of wrong? The order is just a test.

One more quastion, When a product does not have variants how remove the messagem : Please select one of the product options before adding it to the cart ?

https://jutilidades.shop/produto/kit-de-bomba-de-agua-mixer-de-bebidas-portatil-envio-rapido/

Thanks a lot!