Camille Serpentine

A long long long long time ago I set up a Snapzilla account.
It was tied my my original SLU account.
Now since SLU got revamped (a couple years ago?), I've set up a new account here since the old are gone and I'm using a different email address.
I've tried to register for Snapzilla again but it says my SL Avatar name is in use. So I get my password for Snapzilla based on the previous email address I used (it is still a viable email address).
I go to sign in with the old email and password (that Snapzilla emailed me) and it will not log me in.

Is there a way to resolve this issue?

edited to add: I would like to be able to access it so that I can change the email address I am using for it.