Why is pre-filled data not working on all custom checkout links?

Hi All,

I have some concerns about the custom pre-filled data on Shopify checkout. I am listing down the store on which functionality is working fine:

https://thecambridgeshop.com/cart/checkout?checkout[shipping_address][city]=Lahore

Here is the store on which functionality is not working fine:

https://shoestreet.pk/cart/checkout?checkout[shipping_address][city]=Lahore

Details About Issue

I am trying to push the city data on checkout city-input from the Shopify cart page. I have mentioned both stores where this functionality is applied, but it only works in One store.

Can someone please check for me what will be the issue and why the same functionality is not working for the other store?

Your input on this will be highly appreciated.

Thanks