I don’t view Email Inquiry Button in Single Product page

Hi,
I’d like to have the Email Inquiry Button both on the product category page and on the individual product page.
Now i have the button only into the Product Category page.

Here you can view the page OK:
https://www.borseggi.it/categoria-prodotto/borsine-tibetane/

and here the sample page where I need your help:
https://www.borseggi.it/prodotti/borsine-tibetane/tibetana-open-001/

Thanks in advance!

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