After the correct installation of 9.0.3 i have changed php handler from cgi to fcgi and tested 9.0.3 and it worked fine. Version 9.0 and 9.0.1 didn't work with fcgi but worked with cgi.
Then i cleaned everything, all the files, and all tables from database. With the fcgi enabled i tried again to install 9.1.0 and it worked.
But something that i saw when inserting the admin password in the installation was that the 1st time it gives me as strong password, but when i was installing now it gave me as weak password.
So, this is very strange behavior.