Cart does not update/ remove quantity of products on Theme Dawn version 4.0.0

Hello, I am having a problem with my cart updates. I have no apps for cart but I have some shipping, etc. apps on my theme. The problem is that when I add a product (tried random many times) or some products and go to check out and try to change the quantity or remove a product the loading icon appears and nothing happens. No notification for mistakes. Can somebody help with a solution for this? Thanks!

@Diana_Decibel

Hello,

Hope so you are doing well.

Can you share the URL for the store and if it is password please share that also.

I will check and let you ASAP.