Could you, please, provide us with temporary WP Dashboard access to your site to help you with the mentioned settings?
7/ You can use Duplicator plugin to make a total copy of the site or use the default import/Export tool to make a copy of the pages only (Tools > Import/Export).
If you plan one more site I would like to draw your attention to our XStore theme https://themeforest.net/item/xstore-responsive-woocommerce-theme/15780546
It has 90+ demos https://xstore.8theme.com/preview-new/ , fully supports the most popular page builders (Elementor and WPBakery) and has additional elements for them, comes with header builder, single product builder, variation swatches, variation gallery and many more.
