Can anyone solve the ongoing cart issues with the Dawn theme?

Hello, I am wondering if anyone has a solution to the ongoing cart issues the Dawn theme appears to be encountering. I have just recently opened my shop in Nov 2022 and am seeing many of the same issues from months ago have been raised, with Shopify claiming they were fixed…they’re not. I’ve had to change multiple items of code in order to resolve issues such as “Add To Cart” and to update or delete items in the cart.

I’m currently facing the issue where cart items can be updated (quantity increased or decreased), however this does not update in the cart automatically. The rubbush bin delete icon is not working either. The quantity numbers will change, however it is not reflected in the cart. The only way to see these changes is to proceed to the checkout.
It’s now November 2022 and Shopify claimed this was an issue resolved for the Dawn theme 15th May 2022…not so.

The initial issue of the cart not performing any of the above actions and simply showing the loading icon forever, appears to have stemmed from the cart.js file. I have changed fetch(${routes.cart_change_url} to fetch(window.Shopify.routes.root + ‘cart/change.js’, config)

This changes the issue of the constant loading/no update, however it does not provide an updated cart (i.e. prices remain same and products remain in the cart if you have selected to change quantities or delete them). It does however change the quantities, price, items when you advance to checkout. Would greatly appreciate help with how to make this update appear in the cart and fix this very unpleasant problem ASAP.

My website is www.rawaffection.com.au