Hello,
1) Because you enabled the option to display tabs in the column next to the image instead of the full-width tabs under all the information. Go to Theme Options > WooCommerce > Single product > Tabs > manage the position of your tans and their type if you need.
2) Our theme comes bundled with the YITH Wishlist plugin. And we created header elements for that plugin. If you want to use WooCommerce Wishlist plugin then contact the plugin author to get help with the plugin settings.
Regards