Change runlevel - Permission denied

Issue with new task assigned in Kodecloud engineer.
I cant switch to app servers, shows permission denied.

thor@jump_host / ssh tony@c^C thor@jump_host / ssh tony@172.16.238.10
tony@172.16.238.10’s password:
Permission denied, please try again.
tony@172.16.238.10’s password:

thor@jump_host / tony@stapp01 bash: tony@stapp01: command not found thor@jump_host / stapp01
bash: stapp01: command not found
thor@jump_host /$ ssh stapp01
thor@stapp01’s password:
Permission denied, please try again.
thor@stapp01’s password:

thor@jump_host /$ sudo ssh tony@stapp01

We trust you have received the usual lecture from the local System
Administrator. It usually boils down to these three things:

#1) Respect the privacy of others.
#2) Think before you type.
#3) With great power comes great responsibility.

[sudo] password for thor:
Sorry, try again.
[sudo] password for thor:
The authenticity of host ‘stapp01 (172.16.238.10)’ can’t be established.
ECDSA key fingerprint is SHA256:pnCeRuUorIWKiaD24o0cTgyt/259K1PlLf+xb2oKkx8.
ECDSA key fingerprint is MD5:ee:22:86:5b:93:9e:a1:f2:ec:19:6e:2b:02:ed:29:bf.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added ‘stapp01,172.16.238.10’ (ECDSA) to the list of known hosts.
tony@stapp01’s password:
Permission denied, please try again.
tony@stapp01’s password:

thor@jump_host /$ ssh tony@stapp01
tony@stapp01’s password:
Permission denied, please try again.
tony@stapp01’s password:

thor@jump_host / ^C thor@jump_host /

Note: I am using the correct password for Tony

Hello, @ms006
Please find the user and password details from the below link:

I was using the correct password only (from the same document). Until yesterday task was to change the run level (Refer to the attached image) and today that changed to MariaDB troubleshooting (While the change runlevel question simply disappeared).Refer to the attached image.