woocommerce translation

Hi,
though the Loco plugin activation many terms in checkout and other woocommerce functions get not translated to italian, yet files .po / .mo are uploaded and apparentely complete.
I don’t understand if wordpress is still using the theme (Nitro) language or what other problem I’m facing.

May you help me to solve it?

This is the website I’m working on:

https://lanocciolaia.com/wp/

Thanks a lot.

Daniele