Italian language not work Jticketing 1.5

Hi

Jticketing 1.5

I have created the file in Italian language but not work read only english language, why?


yourjoomla/administrator/language/it-IT/it-IT.plg_community_addfields.ini
yourjoomla/administrator/language/it-IT/it-IT.com_jticketing.ini
yourjoomla/language/it-IT/it-IT.com_jticketing.ini
yourjoomla/language/it-IT/it-IT.mod_jticketing_buy.ini
yourjoomla/language/it-IT/it-IT.mod_jticketing_menu.ini

For Payment plugins on confirmation page

yourjoomla/administrator/language/it-IT/it-IT.plg_payment_bycheck.ini
yourjoomla/administrator/language/it-IT/it-IT.plg_payment_byorder.ini
yourjoomla/administrator/language/it-IT/it-IT.plg_payment_2checkout.ini
yourjoomla/administrator/language/it-IT/it-IT.plg_payment_alphauserpoints.ini
yourjoomla/administrator/language/it-IT/it-IT.plg_payment_authorizenet.ini
yourjoomla/administrator/language/it-IT/it-IT.plg_payment_ccavenue.ini
yourjoomla/administrator/language/it-IT/it-IT.plg_payment_jomsocialpoints.ini
yourjoomla/administrator/language/it-IT/it-IT.plg_payment_linkpoint.ini
yourjoomla/administrator/language/it-IT/it-IT.plg_payment_paypal.ini
yourjoomla/administrator/language/it-IT/it-IT.plg_payment_paypalpro.ini
yourjoomla/administrator/language/it-IT/it-IT.plg_payment_payu.ini