SSH new users not working with lastest firmware

With the changes in the firmware, eg. access ssh with: ssh, then a problem arises, how to add multiple users (besides the admin), so they can access remotely via ssh with their own username and password.

I edited the file ‘sshd_config’:
Port 22
Protocol 2
HostKey /etc/ssh/ssh_host_dsa_key
HostKey /etc/ssh/ssh_host_rsa_key
SyslogFacility AUTHPRIV
AllowUsers sshd,akousmatikoi,pato
PermitRootLogin yes
PubkeyAuthentication yes
PermitEmptyPasswords yes
PasswordAuthentication yes
ChallengeResponseAuthentication no
TCPKeepAlive yes
PubkeyAcceptedKeyTypes +ssh-dss
HostKeyAlgorithms +ssh-dss
Ciphers +blowfish-cbc
MaxAuthTries 5

Adding new usernames, for example: akousmatikoi
But doing: ssh dont allow me to login.