Have you tried SSH with the same username and password? Is it working?
Can you login to shell from dcui (ALT + F1) and restart only hostd service using command -> /etc/init.d/hostd restart
Post that please check if you can access the ESXi host via gui. If you have access to shell, validate the sshd config or can engage VMware support
Did you tried reset your root password and triying again?
Welcome to the Community,
can you confirm that you've selected the correct keyboard layout during installation?
I've seen such issues a couple times where e.g. special characters were used, which have different locations on the local keyboard, than on an US keyboard.
It's exactly as it should be. Issue is not ESXi related, but is my misunderstood of remote keyboard / soft keyboard provided by Dell iDRAC9 and upper/lowercase letters confuse.
My silly mistake. Thanks to all for your inconvenience.