"That email address is not in our records"

Hello, I'm afraid I've lost my password to my commenting account with Gizmodo. I tried to use the tool provided to reset forgotten passwords but the system responded with "That email address is not in our records. Please try again." I don't have any reason to think that my account was suspended, so I am a bit mystified. My username is: mikesfl. My email address is mike at cyberstalk.me Thanks in advance!
Mike