1. The “Shop” page has been renamed to “Associarsi” but remains named breadcrumbs as before. How can I change it? Link here and view the Breadcrumbs
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2. When doing a Search is Read More despite I have translated the language file as you explained. Same thing happens in Article Categories. How can I fix it?
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3. If you click one of the News Lists available in a category, there is anchor at the height of the Related News and not at the top of the page. How can I solve this problem?
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4. Woocommerce product image images if you click do not show a pop-up of them but they transfer the user to the image link. How can I solve this problem?
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5. In the Partner section, I use the Portfolio I want to change the hover color. I’ve changed the style file, but there’s color # 07bee5 instead of # 3d8fb3. where do I have to change this color?
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Waiting for feedback I greet you cordially.

1. Where did you place your translated files (PO/MO)?
2. In your search.php template you can find the Read more string, you can replace it with:
<?php _e('Read more','Savia');?>
3. Not sure I can understand, screenshot please?
4. There are several bugfixes related to Woocommerce 3.0 + in our latest update available here:

http://blueowlcreative.com/support_wp/forums/topic/woocommerce-3-0-and-the-new-gallery-features/

5. Try this:

#portfolio_filter {
    background-color: #07bee5!important;
}

https://digwp.com/2010/01/wordpress-more-tag-tricks/

Especially this section: Stop more link from jumping to middle of page