Wootique Checkout page problem

Hello there I am using wootique for a eshop, i have allready translated most of the woocommerce and other pages, but I can NOT change the Checkout text the checkout page. I mean wi ould just like for it to read something else (blagajna).. and whilst i ahve translated this entry via localization it still shows up as Checkout 🙁
screenshot of problem:
http://shrani.si/f/3w/11X/4S4lIXKC/untitled.png

https://wordpress.org/plugins/woocommerce/