Buttons not showing on some pages

Good initial troubleshooting. ??

Do you have a caching plugin installed or any sort of caching enabled for your site? If so, try purging your cache and/or temporarily disabling the cache.

If the issue persists, list your other installed plugins here.

Thanks for your reply!

Unfortunately the issue persists… I also tried to deactivate all the plugins and the result was always the same: in the 3 pages listed above, no sharing buttons. Here are the other installed plugins:

Akismet https://akismet.com/?return=true
All in One Seo Pack https://semperfiwebdesign.com/
Codestyling Localization https://www.code-styling.de/english/development/wordpress-plugin-codestyling-localization-en
Download Manager https://www.wpdownloadmanager.com/
Redirection https://urbangiraffe.com/plugins/redirection/

Thank’s again!

PS Since the buttons show at the bottom of the homepage also, and I don’t want that (I just want them to appear at the bottom of ALL the internal static pages!) I decided to temporarily unclick the option “Show at the bottom of pages” – until the problem is solved.

Plugin deleted. Sorry.

FYI your site is not validating right now:
https://validator.w3.org/check?verbose=1&uri=https://www.scritturaatuttotondo.it/

You should check whether the “Show sharing buttons” setting is checkmarked when you are editing a post or page. This setting is in the “AddToAny” box right below the main editor. AddToAny respects the standard “Show sharing buttons” setting if you ever toggled it in another plugin such as Jetpack.