Sales Tax Not updating w/ address

-- HikaShop version -- : 4.6.1 [2207141544]
-- Joomla version -- : 3.10.11
-- PHP version -- : 7.4.30
-- Browser(s) name and version -- : chrome

Hi there -
I have 2 issues:

1. I have set up my sales tax for one state wide rate. I have it set up so that users may make purchases as guests. But the sales tax does not update after they enter their address. Only when they go to the payment page. If I put the payment option on the same page, it again does not update until they go to the next step.

How can I get the sales tax to update after they enter their address and before they leave the page? Also, when it goes to the payment page I have to add another "cart" to the checkout flow, otherwise users won't know why their price has gone up.

2. is there a way to reverse the shipping and sales tax lines? Because the sales tax line comes after shipping it looks like there's tax on the shipping.

Thanks.

Thanks for the quick response. That all worked. But one more problem. When I activate the "show submit button" I now get TWO "Next" buttons. How do I reduce that to one? That's a little bit confusing for users.

Thank you.