Introduction to Cisco IOS CLI (Command-Line Interface)

Hello Laz,
Just great, the no aaa new-model worked fine.
After entering
CiscoPOE(config-line)# login
" no error, followed by"
CiscoPOE(config-line)#password Kosmos55+
“But I forgot to write mem and after Ctrl + Z and putty again”
Iogin as : network
" I get a new info"
network@ip's password: Kosmos55+
Access denied
What did I miss or what did I mess should i say ?