Hi,
1. you have to enable the "breadcrumb" module and then play with the breadcrumb settings in HikaShop > Configuration > Features > SEF urls
2. The categories are displayed thanks to a menu, then a module is attached to this menu, you have to edit the settings of that module in order to set the value for the option "Sub elements filter" to "all sub elements". These settings can be found under the menu Display > Content menu, select the category listing menu, then scroll down to the associated module part.
3. You have to change the settings of the category listing menu this time, select "div" for the "type of layout" option and the value "title", for example, for the option "Type of item layout".