Woocommerce Product Editor

I’m using hosted WordPress (Bluehost.com) with WooCommerce and the Bonum theme, though this issue appears with all themes I’ve tried. When I click the Product | Add New link, 4 boxes with an error message appear, stating that my site does not support the woocommerce/product_tab.

When I try to Edit a Product, the Editor doesn’t show the WooCommerce Single Product Box, so I cannot truly add or edit any Products to my shop. What does appear, the standard Box visual editor, allows me to add and configure new boxes, but everything I add/edit shows “below the fold” of the invisible, un-editable WooCommerce Single Product Box.

How do I add and edit Products??