2) You need to make changes in template files. Copy
xstore/woocommerce/content-product.php and xstore/woocommerce/content-product-slider.php files into child theme and move the categories code below the title, for example http://prntscr.com/gmngo7
3) Don’t understand what exactly you want to change. Could you explain what you want to change and I’ll sen you the correct code?
