Hi.. my issue is when I try to create the Admin user into a new installation... the format is really basic and won't let me introduce the password. I was tried to reinstall several times but I still having the same issue.

Hi.. my issue is when I try to create the Admin user into a new installation... the format is really basic and won't let me introduce the password. I was tried to reinstall several times but I still having the same issue.
Are you by any chance using Nginx?