Hello, @Juliana,
1- Now, in order to solve your issue simply go to the Dashboard >> XStore >> Theme OPtions >> Theme Custom CSS >> Global and then paste the below code at the bottom of the CSS box there.
.single_add_to_cart_button.button.alt{background-image:none !important;}
Then save settings and check back to your site after clearing the browser cache. The result will appear like this: https://postimg.cc/PvrBST2H
2- There is no such possibility, right now.
You can submit the request here – https://www.8theme.com/taskboard/ Our team will discuss it and maybe implement it in one of the next theme updates.
Regards 8Themes Team.