Now, when I try to connect to the backend and a request appears asking for the administrative password, I return to the frontend.
I deleted in administrator folders .htaccess and htpasswd,connected to backend and inserted a new credentials, but still I return to the frontend with login.
This also is a new browser with cache clean.
So, I can connect to the backend, but always without activating the administrative password.
I do not know if the two things are connected, but during the restore there was an anomaly.
I copied the file created with Akeeba Backup; I started kickstart and the process continued without error, but did not end and stayed with the message (in Italian):
Finalizza il ripristino
Aggiornamento .htaccess
I repeated the process several times, obviously erasing first the DB and files, but always getting the same result.
I solved it by removing the installation folder and renaming htacces.bak and php.ini.bak.
Thanks in advance for any advice.