Itemid=1070 in the URLs means that the current menu item is not a hikashop products/category listing menu item. And because of that, the Joomla SEF system cannot generate a nice URL with the alias of the current menu item and remove the "component/com_hikashop" part of the URL (and the itemid).
So you need to edit the place where you configured that menu item and make sure that you select a hikashop products/category listing menu item instead.
