Wrong translation shared after updating

Hi,
Since I made latest update all my new posts are wrong shared in all socials.

Have a look yourself at this page in Italian it is shared using the English which isn’t set how the main language

http://www.mappeattive.com/it/vallelomellina-map/

My previous posts works but not the new published

thanks
Angelo

https://ww.wp.xz.cn/plugins/simple-share-buttons-adder/