Hello I wanted to ask if someone or from mbtheme if you can help me
I just want that on the ad there is only the name and not the name and surname .. I attach image

@Fabio
This can be bit tuff as osclass stores name, not first name and last name.
You could try this function to get first name from name:
function osc_first_name_from_name($name) {
  $parts = explode(' ', $name);
  return $parts[0];
}


yes which folder should I insert on item.php or from another folder

@Fabio
You will put function to functions.php and then use user name as parameter for this function.

tried it doesn't work

Devi mettere la funzione in function.php e poi richiamarla in item.php, o item-sidebar.php dipendendo dal tema, al posto di osc_item_contact_name()
Rimarrebbe così

osc_first_name_from_name(osc_item_contact_name())

Se ho capito bene