Thank you Chris,

it’s strange because I’ve insert a featured image into post too. I’ll try with yoast tomorrow, thanks

All the best,
Antonio

I know I should have done an export of my config file, but I haven’t done it. I only have a backup of db and files of my site from prev backup ( start from yesterday ), so technically I should be able to retrieve config in prev db tables if I only knew where config is stored in db. I’ve always update the wp core files and plugins to the new versions, maybe I’ve some malware in my wp site, I don’t know, I’ll check soon. I’ve already changed my admin password.

This video should help you: https://www.youtube.com/watch?v=O1xM9qMGbE0

I’ve solved enabling google+ data api and not the youtube data api.