1) Probably you are using some third-party plugin that affects menu options. Try to disable third-party plugins that do not come bundled with our theme and check.
2) There is no such option by default you can either look for additional plugins that would help you to implement this or submit additional customization request here.
3) Payment methods and shipping are WooCommerce plugin settings, not our theme settings. So, please, address your question to WooCommerce plugin support https://wordpress.org/support/plugin/woocommerce/
