Ok Lester, i solved the problem, thank you!!!
Hi Lester and thank you for your quick reply.
In the post editor page i can’t find the option to update the meta, can you give me some detail?
best regards
Thankyou very much for the suggestion of trying to disable other plugins.
I did it and this is the plugin conflicting
https://it.wordpress.org/plugins/category-subcategory-list-widget/
