Hello,
1) Fixed.
2) WooCommerce plugin has 2 tabs: Description, Additional information (sizes, attributes, weight), and Reviews. Our theme allows us to add a few custom tabs: 2 tabs common for all the products (Theme Options > WooCommerce > Single product > Tabs > custom tabs) and 1 tab individual for every product (Products > edit product > 8theme Options > Custom tab title and Description). If you need more tabs you need to look for third-party plugins that allow implementing that.
Regards