Help with this 403 error "Failed to send fulfillment request from shop Portuguese Rambler"

Help with this 403 error "Failed to send fulfillment request from shop Portuguese Rambler"

BettyF
Excursionist
14 0 5

I received this email from Shopify right after an order was placed on my store, the message of the email is below. How can this be fixed?

 

Fulfillment requests from shop *** to fulfillment service Contrado failed. The requests failed with status code 403 and will not be retried."

Shopify Store Owner
Replies 0 (0)