Side bar module not showing products

It's probably because of the options of your module

Hard to say more without looking at them. Could you do a screenshot of the hikashop options page of that module ?

Do you have products directly in that "All photos" category ?
If not, it's normal that it is not displaying any product.

You should change the "sub element filter" to "all sub elements" filter to have the products of its sub categories displayed.

I don't see the "Order photos" module at all on that page (I thought that you were talking about the module "order prints"). That means that the problem comes from the joomla options of your module. Either the module is disabled or set to not display on that menu, or for the current user group...