Shipping method names are not displaying in checkout

I’m working on a site that was previously using ShipperHQ but is shifting to a different shipping platform. I am moving the shipping methods from ShipperHQ to Shopify. However, when setting up rates in the Shipping section of Shopify, I am unable to then see the names of the Shipping Methods in checkout on my store.

I have attached screenshots to show the issue that I am having. The price is coming through correctly but there is no info being populated for the data-shipping-method-label-title element and I cannot figure out why.