App server 1 permission denied when ssh login

When I doing Day 13: IPtables Installation And Configuration. I facing App server 1 permission denied when ssh login. Please check below issue.

thor@jumphost ~$ ssh tony@stapp01
The authenticity of host ‘stapp01 (172.16.238.10)’ can’t be established.
ED25519 key fingerprint is SHA256:guZ7zgIYL0ALObZfA/VrWBMj+S9K0PSeqs782+W1g9w.
This key is not known by any other names
Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
Warning: Permanently added ‘stapp01’ (ED25519) to the list of known hosts.
tony@stapp01’s password:
Permission denied, please try again.
tony@stapp01’s password:

Hi @Dennis-Han

Tha task is working as expected on my end.
I am sure you are using the passwords for the specific Server from this page.