Cannt access WordPress after duplicator

Hi
I am in the process of moving our intranet site (Woffice theme on WordPress) from a extremely slow NAS (ASUS) to a faster one (Synology). I downloaded Duplicator and used it on the old NAS. When trying to install on new NAS it gave an error in server setup, which I am not capable of solving. Then I thought I should do the transfer by just looking at the code in old NAS and create homepage in new NAS by creating the page setups manually.
However, when I try to log into WordPress backend (/site/wp-login.php) in the old NAS, I am redirected to the NAS login to the Control Center. Very stange. Same thing happen when I click the WordPress app in the NAS control center, I am redirected to the NAS login again.
To me, some redirection has been set in a file, or similar.
As it happened after I used Duplictor, do you have any clue what has happened, has Duplicator changed something? and what I can do to re-gain access to WordPress on my old NAS?
Big thank and Best Regards
/Ulf