How to remove an old ID of ADE

Desire for help to change my password Adobe Digital Editions (I tried to change the password by following the usual steps but I find that I can not change it because it says that my email account is my ID and does not allow me to change it.), And this account is compromising my personal data by a security flaw in Adobe databases.

If you can not change the password I request help for the removal of my Adobe ID associated with that email account.

regards