Hi, thank you for your answer.
Plugins:
Akismet Anti-Spam
All In One SEO Pack
Automatically Paginate Posts
Bulk Delete
Coming Soon Page & Maintenance Mode by SeedProd
Cookie Notice
Featured Image Generator
List Categories posts
Importatore WordPress
MailChimp
MyThemeShop Theme/Plugin Updater
Open Graph for Facebook, Google+ and Twitter Card Tags
UpdraftPlus – Backup/Restore
WordPress Exporter
WP-Optimize
Theme: Schema
functions.php: not modified
WordPress 4.9.5
It is a site under development, I can send you login and password in private if you want.
Thank You