Thank you for your quickly reply, but the redirect plugin doesn’t work on my site too.
The code in the plugin is the same of the mine.
As I told the $_COOKIE(‘visited’) is always set.
Perhaps it has to reset when all is starting ?. For example, it must be reset in the wp-head hook (by GP-hook)? and why?
Now I’m testing in local to understand more.
I have resolved. The problem is on the way to work.
From the dashboard it takes little to enable cookies for example simply going on edit page or when I am in GP-Customise. It was necessary to close the panel and restart the browser.
I am satisfied with the choice GP
thank you very much