B- I can see that you have set the icon on a menu item but it does not appear. To solve this I simply edit the menu item see the image: https://postimg.cc/qgnSbNKZ and I set the use it as an image see image: https://postimg.cc/p9wkzBsV by doing this your issue was resolved. Here is the resulting image: https://postimg.cc/DmFHN2cv
3- Actually, the cart and checkout page is coming from the WooCommerce plugin and it does not allow editing theme without customization. If you want paid Customization services submit a customization request to WPKraken team.
You can edit the cart popup. simply navigate to the Dashboard >> XSTORE >> Theme Settings >> Header Builder >> Cart >> there you will be able to change/set the settings from the available options provided by the theme. See the image: https://postimg.cc/Y4mtnXR5 and https://postimg.cc/y37BN7KK
4- Actually, my account page is coming from the WooCommerce plugin there is no such option in the theme to edit it and by default WooCommerce plugin doesn’t allow users to edit it. further, our theme has added an option in the plugin settings WooCommerce > Settings > Accounts & Privacy > XStore “My Account” page settings see the image: https://postimg.cc/NKZybCmX
