product does not show up in the cart

actually I have 2 issues.
Using marketpress, and when i as the admin add a new shop, it doesn't show the global product categories so that when I add products I can choose from a list of predefined categories.

How can set that up?

The second issue is that the new products I am adding in the new shop do not show up in the users cart after they click Add To Cart or Buy Now.

If you choose the silver earrings, they don't add to cart properly.