How to retrieve Roundcube Login Username and Password?

[Test2002]

OS: Ubuntu 16.04.7 LTS (GNU/Linux 4.4.0-1128-aws x86_64)

Ngnix: nginx version: nginx/1.10.3 (Ubuntu)

I'm completely new to Roundcube and I've been tasked with retrieving the Roundcube Login Username and Password to be able to login. Please keep in mind I didn't setup the mail server nor is the person around who did. What would be the best way to go about this?

I don't see anything on the Roundcube front page that displays Forget Username/Password, Register User, or Version number.

Please let me know when anyone has a chance! Thank you in advance!

[JohnDoh]

Roundcube is an IMAP client, it authenticates against your IMAP server, you should look there for user information.