K2 items in blog tab

Uh, ok that's the point then, you need to have subcategories.
I only had a root category for member's item, now I see the user items

Is there any option to configure the data displayed in the listing?
I'd like to add a column for the item intro texts and remove the create date and category columns... if not settings are available, could address me to the vie template to modify?

Default CB Blogs template files can be found below.

/components/com_comprofiler/plugin/user/plug_cbblogs/templates/default

Make a copy of the default template folder, delete any files in it you don't intend to modify, then your folder as the template within CB Blogs to start using your custom template.