I am in the same boat. I contact support, explained that it was an old Account and I no longer had any access to the email. I even so far as to explain what some of the material in my old account could be. I had kept notes and quotes, scenes, etc for books I was working on.
They told me they couldn't help me at all. I have to try to start over from memory or see if I was lucky enough to put that information somewhere else