2- Simply navigate to the Dashboard >> XSTORE >> Sales Booster >> Cart/Checkout Pages >> from there you can change the icon see the image: https://postimg.cc/67xD1DND simply choose an icon from the list and save settings.
– Sorry to say, there is no such feature like this and changes require customization. If you want paid Customization services submit a customization request to WPKraken team.
– No, As I said the page is coming from the WooCommerce plugin and it won’t allow users to edit it changes requires customization.
– No, the payment will appear only at the checkout page not on this page “Cart”
6- Alright, Easy and decide on it.
The link you shared with us has the coupon section and it is the default one on your site it appears like this: https://postimg.cc/fk50K9dN and you cannot change it. Also, you cannot add it on any other page.
