shopping cart not saving items when clicking view cart

I am playing around with starting my first store in a multisite site.

If I click add item to cart, the item or items get added to cart.

If I reload the page, the cart appears empty, or if I click checkout the cart appears empty.

However if I add another item to the cart after the cart has been empty, the cart picks up where it left off.

I have tried this on the framemarket theme, and on a custom theme i created.

Please advise, thanks!