Lost Credentials - Recover or Re-Install from scratch?

I've got an install of Kiwi Syslog Server NG which I've not used for about 9 months.  It's been sitting and running in the background, and I've forgotton/lost the login details.

Is there any way to recover / reset the password, or do I need to accept that I messed-up, delete the whole lot and install a new instance with a new (and securely stored) set of credentials?