Hello,
1) As I see ‘Add to cart’ button disappears for Out of Stock products. http://prntscr.com/75dsoe
2) You can comment the code <?php do_action( 'woocommerce_cart_collaterals' ); ?>
in the file wp-content/themes/woopress/woocommerce/cart/cart.php on line 176. Please clear browser cache and check.
Also your credentials aren’t correct.
Regards,
Robert Hall.