Hello,
5. Unfortunately, I can’t see this button in browser so can’t inspect the code and provide custom css to disable the button.
6.
Simply open function.php file of your child theme and add this code:
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add_filter( 'woocommerce_product_tabs', 'woo_remove_product_tabs', 98 );
function woo_remove_product_tabs( $tabs ) {
unset( $tabs['additional_information'] ); // Remove the additional information tab
return $tabs;
}
8. You may simply add size guide image in product Description or link to size guide image or to page with needed information.
You may check our demo of Classico and other themes to find some new idea for your site https://themeforest.net/user/8theme/portfolio
Regards