The problem we’re running into with the USPS plugin is when we create a shipment label: we can select ‘Priority’ as the preferred service and it works okay but if we select any other type (First Class, Standard) then we get the error “Invalid Service Type. ServiceType must be one of the valid service types. [-2147219038, Validation:ValidateServiceType]”
Do you have any thoughts on what we could try? We have an order where the guest selected ‘First-Class’ as their shipping preference but we can’t seem to create a shipment label for this.
p.s. We’re using the API from WooForce that came as the default with the plug-in.