1) Theme Options > WooCommerce (Shop) > Shop elements > Variation Swatches > Variation Swatches > Off. Then publish changes in Theme Options and check Your Shop and single product page after clearing the cache of the browser.
If this does not work correctly, provide temporary wp-admin access.
2) Our theme applies own styles for the Wishlist. What exactly do you want to change?
3) Additional customization is outside the scope of basic theme support, so yes, it is paid service.
Here is support policy – https://themeforest.net/page/item_support_policy
