Installation of OJS18.104.22.168 works fine.
But, there is a small glitch and I am not able to identify what is the cause of the problem. Namely, when I search for a particular user, the system says it does not exist. However, when I want to create such a user, the system says it cannot be done since the email address is already occupied. Searching the database does not give a positive response either.
Maybe somebody might provide an idea how to overcome this problem?