Shipping, price based method range not working

Hello Community today i came across a new issue in e-commerce where if i use the price based shipping method and set two rates then it takes the last set price range and change the total price accordingly.
I i setup only one range of price in price based shipping method then it works fine but if i add 2 rates then irrespective of total price it only applies the second price range setup in the shipping method

Screenshot Link:

Im using paypal as a payment method gateway

Here is my site Read-Only:
[LINK](Webflow - Lumenese)