Hello,
1/ Thanks for the explanation. There is no such possibility, right now, unfortunately. Please submit your request here – https://www.8theme.com/taskboard/
Styling of button you can change via settings of the element https://prnt.sc/uVIdVdC1aYiC
2/ Add the next code in Theme Options > Theme custom CSS:
.et_b_header-cart.et_element-top-level .et-quantity.count-0 {
display: none;
}
Regards