How can I edit my shipping information to be the correct format?

This is the action you can apply on your Shipping details to be in the acceptable format

Shipping details should to be written in a way that each parameter is delimited with ::: Country, Service , Price, Currency.

In case your feed contains the shipping details in the following way: 

Use the action of Extract objects { } :

Dont forget to Save the view. 

NOTE: The required formatting could be changing in different countries. To read more about the shipping attribution format enter: https://support.google.com/merchants/answer/6324484?hl=en&ref_topic=6324338