Comma in decimals not appearing issue

Hi, I have an issue with decimals. Comma is not showing in single product page:
Example here:
https://www.sgambetterra.eu/prodotto/tagliere-calabria-handmade/
Here a screenshot:
https://prnt.sc/20qvjlh

If I add product to cart the price are right calculated, but plugin is not showing commas in single product page.

Here my woocommerce status report:
https://pastebin.com/rYCYeGfN

I’m using latest version of WordPress, Woocommerce and your plugin.

The page I need help with: [log in to see the link]